EDUP AC600M USB WiFi Adapter for PC, Wireless USB Network Adapters Dual Band 2.4G/5.8Ghz Wi-Fi Dongle Antenna for Laptop Desktop Compatible Windows 10/11/8.1/8/7/XP/Vista/Mac OS X 10.6~10.15.3 Black

I tested this with several devices. Easy to plug in. (You may need to shut off built in wifi.) Speeds were mediocre.

Around here, everybody is using the 2.4Ghz frequency for their Wifi, with many clowns misconfiguring their router to stomp on other channels and causes mad crosstalk, causing network instability and slowdown. I bought this dual band Wifi adapter and connected to my 5Ghz wifi and what a dramatic increase in not only speed but reliability. And the external antenna provided gives me a nice strong signal. A good price for a simple solution. Now, the screenshot shows somewhat lackluster speeds. But when you consider the vast number of boneheads that reside in this building that allow "professional installation" of their Wifi totally misconfigured by these cable "experts" and it and ends up screwing up everyone elses speeds, these speeds I get are actually quite impressive. I have three other Wifi adapters I tested, along with this one, and this one is the best.Now for the improvement. Maybe in the future, allow, via software command, to dim the flashing wifi indicator light on the adapter. For now, I use tape to mask the bright flashing light at night. A small suggestion, but would make for a good one.

Update, 08/02/ 2019 The 4 stars are for customer service, the adapter itself I give a 2. After the second one failed, seller again sent a credit for a replacement after I sent pictures of non functioning adapter. I decided to buy a different model. I applaud the seller for their commitment to customer service. They always got back to me and made it right. It's just that the product does not seem to have any longetivity in fuctioning properly. Some of it may be the design, an antenna sticking out of the laptop and getting taken in and out a lotp. The adapter was loose in the usb ports, leading to frequent disconnects. Perhaps a tighter fitting model might work better and longer. I decided to buy one without antenna sticking out.Edited review: 2/2019: Received full credit from seller for a new adapter. Thank you. Repurchased the same adapter. Edited Review: After 4 months of light use, the thing died yesterday. Completely. No amount of trouble shooting brought it back. I am waiting for the seller's response to a request for exchange or refund and will update my review according to the actions, or lack thereof, the seller takes. This is supposed to have a lifetime warranty.IUpdate number 2: The new one the seller sent me worked for 3 months, then started not working intermittently, now its dead. They seem to have a working time line of 3 to 4 months. When they do work they work well. Original review: I bought a new modem and router for my comcast home WIFI and my three older laptops did not have the software/hardware to take advantage of the 5G band width/higher internet speeds. I bought this to upgrade these 3 laptops. Set up on Win 7 was quick and easy with the enclosed software cd. The network dongle was recognized immediately after re-starting. Speed increased from 110Mbps to 430Mbps on my in-home WiFi. Cannot comment on durability yet. This is an easy, worthwhile upgrade for older laptops. I'm very satisfied with this product.