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EW-7811Un Wi-Fi USB
802.11n Wireless Adapter

Mac / PC / USB 2.0 / 802.11b/g/n
Fast 802.11 Wi-Fi
Boost Your Wireless Reach
EW-7811Un is a nano USB wireless adapter that supports maximum range and speed. Despite the size, this tiny USB adapter supports data rates of up to 150Mbps when connecting with wireless 802.11n devices which is 3 times faster than your typical 802.11g connection. Just plug it into computer's USB port and enjoy incredible high-speed wireless network access.
Robust Coverage
EW-7811Un complies with wireless IEEE 802.11b/g/n standards. Built with the latest wireless technology, the EW-7811Un can increase your wireless coverage up to 3 times as much and greatly help reduce "dead spots" compared to your 802.11g adapter. Data transmission rates can now reach up to 150Mbps when connected to a 802.11n network, with signal travel further and a lot more stable connection as compared to previous generation 802.11g networks.
Simply Sips Power
EW-7811Un has adapted a clever protocol in smart transmission power control. The adapter smartly adjusts transmission output by distance and CPU offload to help reduce power consumption when wireless is idle. With the green WLAN technology, the power consumption can be reduced up to 20% ~ 50%.
Easy to Setup Wireless Security
Wi-Fi Protected Setup (WPS) is a standard for an easy and secure establishment of a wireless network. This wireless USB adapter supports software WPS-compatible configuration. By pressing 2 buttons, your wireless network is immediately secured providing your wireless router also supports this function.
Multi-language EZmax Setup Wizard
The included 16 languages EZmax setup wizard and friendly UI will walk you through configuring EW-7811Un to your wireless network.
Portable and Compact Design
Best of all, the EW-7811Un is currently the smallest wireless adapter on the market. The compact design of EW-7811Un is convenient to carry for all mobile users. It also means you won't accidentally snap your USB adapter anymore and it is barely noticeable once plugged into the USB port.

Product Specifications:

Edimax Part Number

  • EW-7811Un


  • 1 USB 1.0/2.0 Type A
  • Internal Antenna

Wireless Standard

  • IEEE802.11b, 802.11g, 802.11n

Data Rate

  • 11b: 1/2/5.5/11Mbps
  • 11g: 6/9/12/24/36/48/54Mbps
  • 11n (20MHz): MCS0-7 (up to 72Mbps)
  • 11n (40MHz): MCS0-7 (up to 150Mbps)


  • WEP 64/128, WPA, WPA2, and IEEE802.1x
  • Software WPS configuration

Frequency Band

  • 2.4000~2.4835GHz (Industrial Scientific Medical Band)



  • Link / Activity


  • 11n (20MHz) @MCS7: -68dBm±2dBm
  • 11n (40MHz) @MCS7: -64dBm±2dBm
  • 11g @54Mbps: -71dBm±2dBm
  • 11b @11Mbps: -81dBm±2dBm

System Requirements

  • Available USB port
  • Windows XP, Vista, 7, 8, or later
  • Linux
  • Mac OS 10.4.11 or later

Output Power

  • 11b:17 ± 1.5dbm
  • 11g:b:15 ± 1.5dbm
  • 11n:14 ± 1.5dbm


  • Multi-language EZmax Setup Wizard


  • Operating: 10~90% (Non Condensing)
  • Storage: Max. 95% (Non Condensing)


  • Operating: 32~104°F (0~40°C)
  • Storage: -4~140°F (-20~60°C)


  • CE
  • FCC
  • WiFi


  • 0.3" x 0.6" x 0.7" (7.1 x 14.9 x 17.4 mm)


  • 0.95 oz. (27 g)


Manufacturer provided specifications for Edimax p/n EW-7811Un UPC#: 649659022706



Included Items
  • USB Wireless Network Card
  • Driver/Utility/Quick Guide/User Manual CD-ROM
  • Quick Installation Guide

Customer Ratings

Write a Review 4.5 / 5 8 out of 9 (89%) reviewers would recommend this product
Verified Buyer
Reviewer: joji22 Location: Lacey, WA Age: 45-54 Experience Level: Power User Owned Product: less than a month
Rating: 5/5 Got this for my old clamshell ibook April 10, 2017 I didn't know if it would work but for the price I thought I would try it out. I have done this with a number of items that I have gotten from OWC and have always been successful with them all. I was influenced by reading one of the reviews saying it would work with Mac OS 10.4 but I wasn't sure if it would work with my old ibook since I have heard that I might be out of luck with my ibook.

Before I got it I looked at the Edimax website to see if I could find a driver and I downloaded that as well as the how to pdf. Later when I got the package in the email there was a mini cdr that I could load and open with my ibook but it didn't have the right driver with it. The driver was for 10.6.

The install was pretty easy but to get online was a little confusing for the first time. Look for available network and okay that then add your password 2 times and both fields are hidden when you add the password. Once I got it going it worked like a charm. The only way you can see if your connected is to look at Utility it installs or look at the adapter. There's no indication in the menu bar. It is also hard to get out of the clamshell's usb port...

I have also used it on my macbook 2010 (10.9) just to see what it would do. After the install there's a menu app that remains there and tells you ether have adapter connected or when it is connected it shows you as well connects you to your network and It also shows signal strength there was well.

I would recommend this item to a friend! Customer Videos:

Verified Buyer
Reviewer: Anonymous Location: Erin, Ontario, Canada Age: Over 65 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 it works July 21, 2016 Service from OWC GREAT, Canadian postal service SUCKED. Only took 3 days to get to the Canadian border and then I think somebody walked it from Windsor to Erin, taking their time while doing it (about 3 weeks). However it does the job on my Powermac G5. Set up was easy, even for a klutz like me.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: 1TitLizzy Age: Over 65 Experience Level: Power User Owned Product: 1-3 months
Rating: 4/5 On Line Again July 9, 2016 Because I fly old scanners I have to keep my old macs flying, old airport cards won't fly new Airport Extremes. This thing works, and it's not too slow, OS 10.4 doesn't have all the features needed to be fast, so I don't blame this device for what lack of speed there is.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Ontario, Canada Age: Over 65 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Very pleased with this product February 18, 2016 The nano size usb adapter is working well with my old eMac computer. It is the only usb adapter I could find that would work with such a old OS. The only issue I had was that the installation software came on a 2" disk which won't fit in the DVD drive on a Mac. To get around this I just went to your site and downloaded the driver I needed; I put it on a memory stick and transferred it to the eMac. Everything went fine after that.

I would recommend this item to a friend!

Reviewer: BenM Location: Fox River Grove, IL Age: 25-34 Experience Level: IT Professional Owned Product: over 6 months
Rating: 5/5 Excellent! May 21, 2015 I had an older Mac Mini early 2009 (model identifier MacMini3,1) running Mac OS X Yosemite (10.10.3) that had a broken Airport card. This wifi dongle works perfectly connecting to the internet, file sharing with my MacBook Pro, and streaming iTunes content to my AppleTVs!

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Chicagoan, IL Age: 45-54 Experience Level: IT Professional Owned Product: 1-3 months
Rating: 3/5 Worked just for networking May 9, 2015 The USB Dongle is good for communicating over the internet but does not update using Apple's software update website. The reason is, the Dongle have it's own MAC ID and this MAC ID is foreign to the Apple Update website. It performed well online - no doubt it that.

I switch my Internal NIC from one spare apple computer I have and it worked like charm. So basically this Dongle can be very useful to Windows Laptops or Desktops but for Apple I would rate only 3 out of 5.

Verified Buyer
Reviewer: Anonymous
Rating: 5/5 Great purchase February 6, 2015 simply great.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Experience Level: IT Professional Owned Product: 1-3 months
Rating: 4/5 Basic wifi to older macs October 26, 2014 This thing worked with my tiger cube, but not real well with a hub, which you need on a machine with only 2 usb ports. Driver software is very bare bones and does not always connect upon start up. At the price, any OS X mac with a busted airport card is well served with this unit. Long term reliability is not known.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous
Rating: 5/5 Great! June 19, 2014 The product didn;t work at first due to my old os. The customer service represtentative helpd me get it working. we spent over an hour on the phone and she was VERY HELPFUL. Thanks so much!!!!

I would recommend this item to a friend!

Edimax EW-7811Un Wi-Fi USB 802.11n Wireless Adapter Mfr P/N: EW-7811Un MacSales.com SKU: EDMEW7811UN USB Adapter for any Mac or Windows PC with an available USB port. Fully backwards compatible for 802.11g and 802.11b networks. Edimax 2 Year Limited Warranty Ships: Same Day Only $12.99CyberSaver $11.88
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