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Linksys Max-Stream AC1200 MU-MIMO Wireless USB Adapter (WUSB6400M)


This AC USB adapter instantly upgrades your Windows®-based laptop or PC/Mac to the latest Wi-Fi standard, which is 2x faster than AC600 technology. This effectively makes your laptop/PC/Mac a MU-MIMO device, thereby allowing the Wi-Fi signal in your home to be distributed more efficiently to more Wi-Fi devices for stronger overall Wi-Fi coverage.

Next-Gen AC Wi-Fi MU-MIMO technology delivers exceptional speed and performance to your Windows®/Mac-based notebook, laptop, or desktop computer. It allows you to binge watch your favorite shows, play online games, and download large files with supercharged AC Wi-Fi speeds that are 2.8 times faster than Wireless-N. MU-MIMO in Your Home

MU-MIMO in Your Home


Equipped with USB 3.0 technology, the adapter delivers speeds 10x faster than USB 2.0, helping ensure a fast and lag-free connection. The adapter is also compatible with USB 2.0 ports.


The USB adapter dramatically increases your range with its multi-directional high gain antenna.

Easily Bring MU-MIMO to Your Home


To enjoy next-gen AC Wi-Fi, simply plug the adapter into your PC's USB port or use the CD install.


This USB adapter works with all Wi-Fi routers, including your existing unit and those from Internet service providers.

Technical Specs
  • Wi-Fi Technology:
    • AC1200 MU-MIMO Dual-Band AC
    • MU-MIMO
    • Dual band 2.4 and 5GHz
  • Key Features:
    Adapter wirelessly upgrades your Windows®-based notebook computer to AC WiFi speeds with MU-MIMO
  • Network Standards:
    • 802.11ac
    • 802.11n
    • 802.11a/g
    • 802.11b
  • Wi-Fi Bands:
    Dual Band 2.4GHz and 5GHz
  • Easy Setup:
  • Minimum System Requirements:
    USB 2.0
  • Security Features:
  • Warranty and Support:
    • 1 Year US
    • 2 Year EU
Package Contents
  • Linksys AC1200 Dual-Band Wireless-AC USB Adapter, WUSB6400M
  • CD-ROM with Setup Software and Resources
  • Quick Start Guide
Rated 5 out of 5 by from Amazing Speed and Signal Strength First of all I received this product for my honest review. and i Must say im totally impressed. I have a nice laptop but it has the old wireless N and as soon as i plugged in the AC1200 adapter its was like a new computer. the speeds were equal to me hard wiring it via Ethernet. The setup was so easy plug it in sign in to your network and full bars, full link speed Also worth mentioning the adapter like no other has a hinge that allows you to fold up the antenna for even more range. I also plugged this into my Desktop and watched youtube @ 4k 60fps . mot one frame drop or lag spike!!. Great product all the way around!!
Date published: 2017-05-08
Rated 5 out of 5 by from WOW! Super Fast Wireless I received this device free from Linksys Friends and Family and I must say this is an extremely FAST wireless adapter. I stream movies from my main desktop computer to my laptop in another room wirelessly, which is then connected to my TV through an HDMI cable. There is NO buffering, No lag, NO hesitation. Previously, I was only able to do this with a wired connection. My wired connection is 100mbps. This wireless connection is 867mbps. I am thoroughly impressed with this performance. One more thing...wireless adapters usually require a driver installation disk. This is strictly plug and play on my Windows 10 setup. I love this!!!!
Date published: 2017-05-02
Rated 5 out of 5 by from Excellent boost to speed and signal I need a boost anytime I was downstairs, so I tried this USB adapter out to see how it would work. I have a Linksys 802.11AC router to go along with this adapter. I set it up on the desk top first and it was very easy to install, basically plus in and it did the rest. There was a good boost on the desk top so I thought I would try the laptop and the speeds increase was beyond expection. I went from a download speed of 11.36 to 119.07 and a upload speed of 5.46 to 5.92. I would positively recommend this product to anyone.
Date published: 2017-05-05
Rated 5 out of 5 by from Powerful & Easy NOTE: I was sent this product to evaluate. I have tried this on the 2 PC desktops I have that do not have integrated wireless WiFi. The Windows 10 system was 'plug & play' easy, just plug the device in and in a few minutes it loaded the driver and recognized my Router. When I tried it on my Win XP Pro system, it did not load the device driver automatically, I had to use the included CD. Once done, it performed exactly as the Win 10 setup. Had exceptionally strong signal 5G reception within 50ft inside the house. Even outside in our lanai it received 4-5 bars, well over 50ft away and thru multiple walls. Device is a great cost effective alternative when you cannot used Ethernet cable.
Date published: 2017-04-26
Rated 5 out of 5 by from An Excellent Product In Every Aspect The product was delivered very quickly and in perfect condition. As directed by the easy-to-follow Quick Start Guide, plugged it into a usb port on my Dell Inspiron 1525 laptop, and it was instantly recognized. I then went to Device Manager and installed the latest driver. I then connected to my router to establish a wifi connection to the internet. Everything was very quick and smooth. It stays connected as long as I want to be on the internet without interruption, and it transfers data very quickly. I am extremely pleased with this product and would highly recommend it to my friends and family.
Date published: 2017-04-29
Rated 5 out of 5 by from Tired older computer ? This Is worth a try Just finished getting this Wi-Fi adapter install on an HP laptop running Win 8.1 that's 3-4 years old . WoW , is my 1st impression . Once I figured out how to get it installed(took a bit of trial and error) I ran a Speed test to see what if any improvement I might get ... WoW is what I got .... Runs as fast as my Hard Wired desk top .... 90Mbps .... IMO , This unit solved the connection speed issues I've been trying to fix . Bought a wrt3200acm router a couple of months ago while upgrading the whole computer system. Computer ,modem, router . Now , I'm getting the speeds I should be getting . I can't rate some options as I haven't had it long enough and not tested it's distance .... I have a feeling it's all good
Date published: 2017-07-22
Rated 4 out of 5 by from Nice, solid performer I received this from Linksys for free to evaluate and write an honest review. I am using it on an older laptop that was giving me headaches trying to keep connected to my router. I found I had to download a driver for this product, although the laptop was running Windows 10. After the initial set up, I have found no drop outs, and fast start up connections. I would recommend this adapter to anyone who needs a solid connection at an affordable price. I am sure that the speed comment below is my machine's capability, not the adapters fault.
Date published: 2017-08-24
Rated 5 out of 5 by from Solid USB 3.0 WiFi adapter with a flip extension Last year I bought a competitor's PCI Express Wifi card to get 5Ghz on my desktop. The speeds I've consistently received were in the 50Mbps area, sometimes peaking around 75Mbps under ideal conditions. I should note that my router is on the main floor and my computer is upstairs on the opposite end of the house. The distance, if I was to draw a straight line through the walls, is somewhere around 40-50 feet. Last week I received this WiFi adapter free in exchange for honest feedback. Installation couldn't have been easier as I simply plugged it into my USB 3.0 slot and Windows 10 installed the device drivers for me. The speeds I'm consistently obtaining are around 160Mbps, more than 3x what I was receiving! "It's not the size of the dog..." There's not much else to point out because my experience was so simple. I haven't used any Linksys software with the adapter so I can't speak directly to that. The adapter is black, about 2 inches long and maybe 1/3 of an inch thick? Definitely not too big, but larger than a typical USB storage drive. Also, it literally was plug and play and I disabled my other WiFi devices to ensure this was the default. I would highly recommend to anyone looking for a simple and powerful USB WiFi adapter for a laptop or desktop.
Date published: 2017-05-04
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*Maximum performance derived from IEEE Standard 802.11ac draft specifications. Actual performance can vary, including lower wireless network capacity, data throughput rate, range, and coverage. Performance depends upon many factors, conditions and variables, including distance from the access point, volume of network traffic, building materials and construction, operating system used, mix of wireless products used, interference, and other adverse conditions. An 802.11ac router or access point will be needed to achieve 802.11ac performance.
†Three or more 1x1 MU-MIMO-enabled client devices must be connected to achieve the three (3) times faster physical data rate.