TRENDnet AC1900 High Power Dual Band Wireless USB Adapter, Increase Extend Wi-Fi Wireless Coverage, High Gain Antennas, Stream 4K HD Video, USB 3.0 to USB Type A, Windows/Mac OS Compatible,TEW-809UB

It can give you cancer from a clear warning from the box and it mentions it never again for your health don’t buy it

Edit: Okay, sooo I feel pretty stupid, because I'm pretty tech savvy but this one slipped by me. My router broadcasts two wireless networks - a standard one and the 5g. They are essentially named "Standard WiFi" and Standard WiFi_5G". You guessed it. Somehow my rig decided to connect to the standard with 10mbps instead of the 5g with 600mbps. Router still operational. User error. Updating my review and leaving my error here in hopes that it might help someone else. ORIGINAL REVIEW: When I first purchased it, the product was amazing. Powerful signal at amazing speeds. I have 1gig internet, and was getting a consistent 750-800mbps around the apartment.I was pretty blown away, and was thrilled that I wouldn't have to run an Ethernet cable to my comp. Unfortunately, after six months, the device speeds are abysmal. After comparing it to speed test with wired Ethernet and other wi-fi devices, I am incredibly disappointed. Speeds are roughly 10% of what they were and ping is through the roof. I went through all of the manufacturers recommendations, including updating drivers and removing power throttling and nothing. For the price, I had hoped for better. Just another company making an inferior product to save a dime.

My office/library is on the third floor of my house and I have never yet managed to get 5ghz to reach that far. This is the thing to do it. Very impressed so far.

One of the best wifi adapter

This wireless adapter is great. I live in an old apartment with thick concrete walls. My previous USB wireless adapter had usually been giving me DL rates that typically maxed out around 10 - 12 Mbps. Now with this adapter, I'm consistently able to hit my ISP's max speed of 40 Mbps any time I do a speed test. The multiple antennas and the beam forming for this adapter seem to work quite well, without any tinkering required.

I was mislead by a website saying that this wifi adapter is one of the best, without looking at the reviews on amazon, i bought this device and it's already trying to die on me, not only that, but based on treeview an application which displays whats on which usb ports, i noticed it says usb 2 version when you click on one of the devices for more information plus it says it doesnt run on a super speed connection, but high instead, and another thing i noticed is it doesnt give you the option to choose 802.11n wireless mode considering all the antennas it has which is overall very disappointing i really did have high hopes for this device.