Edimax Wifi Adapter1719293751-11417571007-11871033215-12045399473-1

Edimax EW-7811Un 150Mbps 11n Wi-Fi USB Adapter

3.8 out of 5 based on 196 customer ratings
(192 customer reviews)

Wireless Mini Nano Size USB Adapter, Up to 150Mbps 802.11n Wireless data rates. Perfect for Raspberry Pi2 & Pi3. Supports Windows, Mac OS & Linux.


1 in stock



Product Description

EW-7811Un is a nano USB wireless adapter that supports maximum range and speed. Despite the size, this tiny USB adapter supports higher data rate of up to 150Mbps when connecting with wireless 802.11n device which is 3 times faster than your normally 11g connection. You can just plug it into computer’s USB port and enjoy incredible high-speed wireless network access. This is for sure the trendiest piece of upgrade you can make to your wireless network.

  • Supports 150Mbps 802.11n Wireless data rate – the latest wireless standard. Permits users to have the farthest range with the widest coverage. (Up to 6 times the speed and 3 times the coverage of 802.11b.).
  • Power Saving designed to support smart transmit power control and auto-idle state adjustment
  • Supports WMM (Wi-Fi Multimedia) Standard so that you can let different types of data have higher priority. It would allows better streaming of real-time data such as Video, Music, Skype etc
  • Includes multi-language EZmax setup wizard
  • Spec Standards IEEE 802.11n; backward compatible with 802.11b/g Wi-Fi Certified. Security 64/128 bit WEP Encryption and WPA-PSK, WPA2-PSK security; WPS compatible IEEE 802.1X
  • Port 1 x 2.0 USB Type A. Wireless Data Rates Up to 150 Mbps. Modulation OFDM: BPSK, QPSK, 16-QAM, 64-QAM, DSSS. Frequency Band 2.4GHz – 2.4835GHz. Antenna internal chip antenna
  • Channels (FCC) 2.4GHz : 1~11. Power Input USB Port (Self-Powered). Dimensions 0.28″ x 0.59″ x 0.73″. Temperature 0 -40 degree C (32-104 degree F). Humidity 10 ~ 90% Non-Condensing. System XP/Vista/Win7, Mac, Linux

Compatible With: Windows 7/Vista/XP, Mac OS, Linux.

Additional Information














2 years part and labor

192 reviews for Edimax EW-7811Un 150Mbps 11n Wi-Fi USB Adapter

  1. 5 out of 5


    I tried for days to get this configured. Here is so much conflicting information out there. Finally I found a script to automatically install it. Here are the instructions:

    Installing your rtl8188cus wireless adapter:

    If you are installing your first wifi adapter or adding a new wifi adapter to a Pi that
    already has a different one installed the driver should be installed BEFORE plugging in the
    new wifi adapter.


    So connect up your Pi then power on and wait for it to boot and initialise. Log in and then
    you can start to install the software/firmware for the wifi adapter.

    Some images need configuring when they are first run so go through the configuration before
    running the sript. After the image is configured you can start the script to install the wifi.

    If you have an internet connection to your Pi you can now download the script. Use the

    sudo wget http://dl.dropbox.com/u/80256631/install-rtl8188cus-latest.sh -O /boot/install-rtl8188cus-latest.sh

    This will install the script in the /boot directory of the SD card ready to run.

    If you are NOT logged in as root start the script using the command:

    sudo /boot/install-rtl8188cus-latest.sh

    If you are logged in as root use the command:

    /boot/install-rtl8188cus-latest.sh (no sudo!)

    If you are connected to the Pi using ssh, and not logged in as root user then you may need
    to use the command

    sudo bash /boot/install-rtl8188cus-latest.sh

    or if logged in as the root user.

    bash /boot/install-rtl8188cus-latest.sh

    The script should now start running. I have written the script so it will output messages to
    the screen so you can see what it is doing as a lot of the time there is no output to the

    If you have not used the script before it will make an update to the kernel configuration
    to allow you to run with the wifi adapter plugged in before the driver is loaded. This
    configuration change will disable a built in driver that does not work and causes problems
    if the wifi adapter is plugged in before the working driver is installed. After making the
    change it will shutdown the Pi. You can then plug in the wifi adapter and power on again
    and thePi should run without problems. You can then run the acript to install the wifi
    driver and configure the wifi.

    At the beginning of the installation the script will make several checks. It will check if
    you have an internet connection, wired or wireless, and you have access to the internet. It
    will try and determine if you already have a wifi adapter configured.

    If you do not have an internet connection to your Pi it will check it has all the necessary
    files to install and run the wifi driver. If it does not have all the files it needs it will
    output a list of files it does not have and will abort the installation. You will have to
    download the files it requires and copy them to the /boot directory of the SD card and
    restart the script.

    For some images it may be necessary to install some additional applications to allow the
    wifi to operate correctly. The script will install these before configuring and installing
    the wifi driver. If your Pi doesn’t have an internet connection and these files are not
    copied to the SD card the script will list the files it needs and then abort. You will need
    to download and copy these files to the /boot directory of the image.

    To copy missing files to the Pi there are basically two ways to do it. You can shutdown the
    Pi, remove the SD card and plug it into the computer used to generate the image in the first
    place. Then download the missing files on that computer and copy them to the SD card.

    Alternatively you can download the files needed on another computer with internet access and
    then copy them to a USB stick. You can then install the USB stick in the Pi and copy…

  2. 5 out of 5


    It does what it says, great connectivity on G and N modes.
    It works fine on WIN 7 and MAC OS ML.
    Highly recommended.

  3. 2 out of 5


    I purchased this to use it with a desktop in the upstairs bedroom directly avove the room in which the router is placed.. We recently switched our service provider to and the connection speed of 50 Mbps. My laptop connects without any problems when in upstairs bedroom with its built-in wifi and the speed I get is about 22 Mbps, when I take it downstairs in the same room as the router it jumps from 22 to 30Mbps, (45 Mbps via ethernet).

    I tried the Edimax with my laptop which has no problem connecting when downstairs but in the bedroom it keeps loosing the signal intermittently. My laptop has Windows 7 installed.

    I tried it with my second laptop which is an IBM Thinkpad with Ubuntu 12.04 installed. The speed I was getting downstairs was 12 Mbps which I thought was not bad but upstairs the speed dropped to barely 2 Mbps and sometimes no signal

    I decided to return it and selected another adapter TP-Link TL-WN722N which worked like a charm on all my machines.

    If you will be using the unit in the same room as the router be it Linux or Windows, this will work for you but if the router and the unit are at a distance, particularly on different floors you will have issues.

    The main reason for poor performance could be attributed to the unit being very tiny and the built-in antenna is not powerful enough for it to work at a fair distance from router particularly if there are walls and floors in the way.

  4. 5 out of 5


    Works perfect with Raspberry Pi and OpenElec. No messing with settings just plugged it in and OpenElec picked it up with no problem.

  5. 5 out of 5


    Perfect for Raspberry Pi. Didn’t need to install drivers. Got a great connection from my router. Saw another review suggesting using a powered hub because of a problem dropping connection. I used the usb port on the pi and have no problems.

  6. 5 out of 5


    Purchased this USB wifi to dongle to use with my Raspberry PI running openelec & XBMC. Works great. Took a few minutes to get the settings right to get it to work but once the settings are right, it works like a charm. Here are the settings I used:
    Goto System->OpenElec->Network
    Network Adapter:
    Network Technology: WLAN
    Network Interface wlan0
    IP Settings: (USE SETTINGS APPROPRIATE FOR YOUR NETWORK!) I haven’t tested it with DHCP yet.
    Static IP Address:
    Netmask Prefixlength:24
    Network Gateway:
    DNS Server 1:
    WLAN Settings:
    WLAN Passphrase: Your passcode

    A couple of observations to help insure success:
    1) The Rasperry PI is very sensitive to under-powered power supplies, especially when using USB WiFi and drives. Some reviewers said they had to use a powered USB hub to get this dongle to work. I can only see two reasons that that would be the case: 1) They are using too small a power supply for the PI (a minimum of 1A is REQUIRED, I strongly suggest a 1.1A or greater power supply) or 2) They were running another power hungry device off the PI’s USB port, like a USB drive of some sort. I have no problem running this dongle directly off the PI with no hub.
    2) First time setup is much easier with a USB keyboard plugged in, but when using two USB devices on the PI its critical you have a strong power supply. By the way, iPad power supplies work nicely, as do the newer iPhone power supplies.

    I’m very happy with this purchase and will be recommending it to a group of high school kids who I’m helping with their raspberry PI projects.

  7. 5 out of 5


    I purchased this because something was wrong with my macbook air, probably the antenna. Downloads were ridiculously slow.

    I installed this using the RTL8188CUS driver for OS 10.8 from the Realtek website, as this has a Realtek chip.

    It works fantastically!

  8. 5 out of 5


    I ordered my first of these adapters to replace the built in wireless antenna in my laptop about 2 months ago. This receiver delivers a strong signal and works throughout our 3 story house. Yesterday the usb wireless adapter on my PC in the basement went bad so I decided to give this adapter a try down there. The signal and speed was better than the full size usb adapter I was using previously.

    The install was also very easy. My laptop is running Windows 8 and as soon as I plugged this adapter in it was recognized and started working. My PC is running Windows 7 and I had to download the drivers from the Edimax website. Once downloaded the device was detected and worked great.

    I just ordered a second EW-7811Un to use permanently on my basement PC.

  9. 5 out of 5


    I was amazed at how tiny it is! About the width of my little finger pad and not longer than the first either! I used this for my mom’s Sony internet TV , which was having trouble connecting to Netflix and the internet was running rather slow. As soon as I plugged it in, I went to internet settings and the thing picked up our WiFI from a different room immediately! Internet and Netflix 10 times faster than it was! Extremely happy with the delivery time too. I was originally told I would have to wait ’til April to get it; I received it 3/14! Awesome!

  10. 4 out of 5


    I purchased this to add wireless connectivity to my Raspberry Pi running OpenELEC. My intention was to have the Pi sit in my second floor bedroom and stream media (movies and music mostly) from the HTPC running XBMC downstairs.

    Upon plugging it in, I went to the settings screen in OpenELEC and entered in my wireless networking information. I rebooted for good measure and went to system information and found that it had no IP address. After verifying my wireless settings and rebooting once more, I still wasn’t connected.

    I tried a boatload of things, including installing RaspBian, RaspBMC, different versions of OpenELEC, various command line voodoo, disabling Wifi authentication, etc. None of this worked until I used a powered USB hub, and then it connected automagically. I was simultaneously relieved and frustrated when it worked. Relieved because it finally worked, frustrated because I spent so much time with it.

    Now, several people have said that this doesn’t need a powered hub for the Pi- which is actually why I bought it. My personal experience was that it did. I have seen things from other people about having to change their power supply to make Wifi adapters work on the pi – I didn’t have another to use. Just keep that in mind that if you have trouble, try a powered USB hub before you tear your hair out.

    With the Wifi now running properly, I took the Pi to my upstairs bedroom and set it up. I had previously verified that 1080p movies on the wired LAN ran without jitter or buffering. Playing with it on wireless, I found that I had to set my video streams to transcode to 1mbps 720p in order to stream without buffering. I was just happy that it was working, so I was OK with the quality drop.

    If you are looking to stream high quality media over this I would suggest one of the other 300mbps or even 450mbps adapters available online. If you are just looking for a cheap, low-profile wireless adapter for web browsing, this should function perfectly.

  11. 5 out of 5


    How can it be so tiny and work so well? Well it can. I am very pleased. It replaced a much larger wireless adapter that was in the way.

  12. 1 out of 5


    I guess I have to give it 1 star because there’s no such thing as zero stars. This thing is total crap. If you like 1993 14.4k speeds then go for it. Perhaps if you are VERY close to your router it would work but get over 10-20 feet or so and forget about it. Drops signal frequently and when it does connect, the speed is so ridiculously so that it’s unusable. I guess I’m going back to the CAT cable.

    Read the other 1 star reviews, I think you will get the point.

  13. 1 out of 5


    I ordered this product because the network adapater in my new Lenovo Yoga 13 doesn’t have a long range signal. I plugged in the Edimax and Windows 8 automatically recognized the drivers. The signal strength was much better than my internal network adapter, BUT the download speed was absolutely appalling. I ran several tests on the adapter and I couldn’t get download speeds over 1mbps. I’ve returned this product and will continue to use my internal network adapter instead.

  14. 5 out of 5


    I really value when things work, and work correctly, reliably, right away without any issues. Well the Edimax fits this category. Within 5 minutes of this package arriving, the easy to open box revealed the tiny wifi adapter, a tiny CD and a small set of instructions which were promptly set aside. I put the wifi adapter into an available USB port, the drivers installed, I entered the network password and I was instantly connected again. It has since worked reliably without any issues whatsoever. HIGHLY recommend!

    According to the package, the system requirements are CPU Pentium III 1G or above, 256 MG RAM, One CD-ROM Drive, 100 MG available hard disk space, one available USB port, Windows XP or Vista or 7 or Linux or Mac 10.4x or above.

  15. 5 out of 5


    This worked perfectly with my Raspberry Pi using the on screen WiFi setup utility. I plugged the Edimax directly into the Pi, attached a powered USB hub to the other port on the Pi, and plugged in the mouse and keyboard to the powered hub. I was wirelessly connected to the Internet in no time. I was actually shocked that it was so simple!

  16. 5 out of 5


    I purchased two of these Edimax wireless units for use with Raspberry Pi mini computers. I’ve tested Rasbian, Rasbmc, and OpenELEC. In all cases I was able to easily use the Wi-Fi module without much fuss. In two cases (Rasbian and Rasbmc) the Wi-Fi adapter was supported out of the box, and enabled by default.

    The unit is absolutely tiny, perfect for a diminutive computer such as the Rasberry Pi. The performace seems adequate, and stability has been good. I’ve not done any extensive benchmarks, but suffice to say that both units have worked well for me.

  17. 1 out of 5


    Everything worked. For a second. The reception was spotty, like it kept resetting the signal or something. Trying to surf the web was like I was living back at my parent’s house with dial up. But worse. I couldn’t even load most pages. Tried finding updates, changing router channels, but nothing would work. My computer is set up about 15 feet from my router in the same room, so i figured anything would work. Very wrong, I was.

  18. 3 out of 5


    Updated 02/25/2013

    I had the product returned and replaced. Turns out the new one works a lot better than the one I had earlier. It is now to a point where I can stream youtube videos. Looks like I just got a bad part earlier. Changed my rating from 1 to 3 stars.

    Does not work period. Spent countless hours with their support and the best they could comeup with was “connect it to the PC using a USB extension cable”. What is the point of having a small form factor adapter if you have to use a 6 foot long cable to connect it to the PC in the first place. It connects but is barely able to beat dial up speeds, it actually reminded me of the dial up days when you would be staring at the screen waiting for the images to load. Looking at the packet stats the ratio of packets sent to packet retires is 1:3 this junk spends 75% of the time trying to resend the data packets.

  19. 5 out of 5


    5 stars because it “just works” with my Raspberry Pi (model “B”).

    I plugged it into the top USB port and it was recognized by the three operating systems that I use on my Raspberry Pi:
    — Raspbian
    — Raspbmc
    — Fedora 17 remix

    In all three, I used their GUI tool to configure the WiFi using this adapter.

  20. 5 out of 5


    Bought this for my Pi and its perfect! Has a tiny footprint, decent range, and works right out of the box! No complaints what-so-ever. The box also comes with a driver CD and a manual… if you really need it.

  21. 1 out of 5


    Connectivity is not consistent. Streaming from central location (NAS) to your PC is very problematic.I downloaded drivers from mfg site for Windows7 but really didn’t make any difference. Browsing in Internet seems fine but trying to watch something from youtube or any other source is revealing the issue.
    Also, the package I received from Amazon didn’t have any thing other than this little USB device. I am wondering whether this was a previously returned product to Amazon??

  22. 3 out of 5


    This wireless USB adapter works well enough on my early-2011 MacBook Pro (OSX Lion). The size cannot be beat. I don’t even have to remove the adapter to store my laptop in my computer bag since the adapter is so slim.

    It took a few minutes to figure out how to install the driver/software since the included disc is a mini-cd and thus won’t load on my laptop. I ended up just downloading the latest drivers/software directly from Edimax’s website and they installed fine. Next, it took a few tries to figure out how to use the Connection and Available Networks dialog since the device doesn’t use the native OSX interface. Both of these were’t very difficult for me as I spend a lot of time setting up and fixing computers. For a novice, I think it would be quite intimidating.

    My biggest gripe, however, is that the network connections software won’t automatically connect to saved networks. Instead, it saves one network as the “default” network and will always connect to that one. But, as soon as I move to another location, I have to manually connect again (even to a saved network). Certainly not a big deal, but a bit annoying nonetheless.

    Data speeds are good; not amazing, but I doubt that is a fault of the adapter itself. Overall, I’m very happy to have WiFi back on my laptop after the internal network card failed. If the same situation came up again, I’d gladly purchase another of the same adapter.

  23. 5 out of 5


    This is a great little unit. Looks more like a dust cover for the USB socket but it works great. I’m using it as a wireless link on my raspberry pi running raspbmc. It didn’t even require drivers, just simple plug and play.

  24. 5 out of 5


    I have been using this about a week and no problems to speak of. When I installed it Win 7 claims to have installed it and it was ready to use before I even got the CD in but don’t think it was really installed until I ran the installation which took no time and gave me no problems. My router is in a closed cabinet about 10 feet away from my computer and my signal strength is always over 90% and ‘link quality’ whatever that means is always 100%. When I reboot my computer or when it wakes up from hibernating I am instantly re-connected with no action needed on my part. A little window pops up letting me see the signal and settings options each time (I could probably disable this if I wanted). The user interface in my opinion is as detailed as it needs to be without being cumbersome. I let it show me a signal strength meter in the system tray but there are no unwanted ‘extras’ bundled with it that I can see. I was deciding between this and some more expensive adapters made by brands I recognize and some with bigger ‘antennas’ but glad I settled with this one because it is perfect for my needs.The tiny price and size are awesome. There is a little blue flashing light on it indicating that there is traffic going on but it is not so bright that it is annoying.

    Also I used Speedtest to confirm that my network speed was unchanged from my wired connection. I get >20Mbps through Comcast and this adapter has no problem passing that on to my PC wirelessly.

  25. 3 out of 5


    This installed without a problem. Came with a mini-DVD Install Disc, however my computer has a slot drive (vs a tray drive). DO NOT STICK THis INTo A slot drive!!! Had to load it onto a USB drive using another computer.

    Anyhoo, once I did this, found the “Autorun” file, and away she went.

    My coverage is TRIPLE what my brand new Samsung’s built in Intel wireless card achieved. Yes…TRIPLE! My built in card is horrible, but I knew this when I bought it. Simple fix!!! And the size of this thing is very tiny….don’t even notice it in one of my USB slots.

    Don’t hesitate…it works!!!

    UPDATE January 15, 2013:
    After owning this for a few months, the plastic piece on the outside broke off in one corner. I don’t recall banging it around at all since it mostly remains on my desk. So I deducted 2 stars.

  26. 1 out of 5


    Normally I don’t pay much attention to nay-saying reviews if most ratings are positive. However, in this instance I really should have listened to the ones who had problems with this device. It’s simply too small to get any kind of reception except within 10 or 20 feet of the router. I end up spending upwards of an hour reconfiguring my network settings and crossing my fingers every time I try to go online. Often I end up giving up and using my wife’s HP laptop from 2003 because it has a more reliable wireless signal than this thing does.

    Stay away, spend the extra 10-15 dollars and get something that works.

  27. 5 out of 5


    This little thing performs, my G50vt x5 gaming laptop wifi is the best always, I always get my 25mb download speed and 6mb upload speed, but after 3yrs it gave up and connection is dropping, I bought this little edimax usb wifi not expecting that it can get near my original laptop wifi, but to my surprised it is closed to it, dl speed is 20mbps and 5mb upload speed very closed to my laptops original wifi, no intermittipent connection while playing online so no complaint but we will see if the durability is the only question, will update the review if I will encounter problem.
    I encourage you guys to review what you buy to help buyers and the product itself that deserve it, and so company can know what products need to be updated and improved.

  28. 5 out of 5


    I have an old dv9843 where the Intel 4965agn card disable whenever the AC charger is plugged in and the battery is not fully charged, a real nuisance. Anyway after looking around for a few, I decide to purchase 2 nano usb n adapters. The Airlink AWLL5099 and This one the Edimax EW-7811Un. Both worked, however, the Edimax installed with windows 7 drivers; it was plug and play. The Airlink 5099 needed the cd,(I used the Edimax cd also for the connection interface software) interestingly both have a Realtek chip.

    The Edimax signal strength was ranging from 64 to 92 percent about 50 plus feet away from my router and fluctuating between 90 and 150mbps download and upload, while the quality link was 100%. The Airlink 5099 was at 15mbps.(I didn’t try the Airlink any closer to the router, I stuck with the Edimax)

    Additionally, the Edimax drivers can be upgraded to 2012 drivers the one on the cd and Edimax’s website have a 2010 date when installed.If you search Realtek’s website for RTL8192CU chipset, You’ll be able to install newer drivers. Keep in mind you will have to do a force install through windows device manager search for nano usb adapter properties, driver update and search for the drivers within the downloaded drivers. The benefits are you’ll add two extra properties the the cards advance tab. those properties are bandwidth which allows you to change between 20-40mhz and 20mhz.The second allows you change the Wifi config from performance to Wifi. So for so good.

  29. 5 out of 5


    I bought this adapter because it was an inexpensive adapter that explicitly had a chipset that works with Adafruit’s Occidentalis 0.2 distribution for the Raspberry Pi single board computer. It works perfectly and does not draw excessive current. The link is very good at least in 802.11g mode; I can put the Raspberry Pi out in the backyard and it easily reaches my access point inside in the front of the house. I don’t have a 802.11n access point at home, so don’t know if it goes full speed out in the backyard, but it’s plenty fast for my purposes.

    Certainly recommended for Raspberry Pi users who are looking for an adapter with this chipset.

  30. 1 out of 5


    used very lightly, but used on a several PCs. Love the software, both from the CD and dnlded off net.
    unfortunately the receiver started dropping it’s signal, sometimes can’t even get a web page opened, or just one web page then it drops out.
    I have my laptop in the same room, connected to the same wireless router, wirelessly, and I know the signal itself is stable.
    I’ve had the same issue now, of this receiver dropping the signal, on several PCs, as I work on them here and there and have them available to test with.
    Will spend the extra ten bucks next time.

Add a review