Review on 🔌 High-Speed USB WiFi Adapter, AC600 Mini Wireless Dongle for PC/Desktop/Laptop - Dual Band 2.4G/150Mbps+5G/433Mbps, 802.11 ac - Windows 10/8/8.1/7/Vista/XP, Mac OS 10.6-10.15 Compatible by Nathan Byard

I bought two of these adapters to upgrade two 2.4ghz wireless g laptops to 5ghz wireless ac. Fairly fast: I have 120Mbps service from my ISP and once this adapter was up and running, speed tests show it was able to hit that speed most of the time. So, to connect to the Internet at a speed of 120 Mbit / s, this is enough. Too flashy: This adapter has a very bright blue LED on the top that blinks slowly when there is no wireless connection and very quickly when there is a wireless connection. Connection. It flashes quickly even when there is absolutely no network activity. And the way of blinking is unstable. It seems to speed up and slow down randomly. At first I assumed that the rapidly blinking LED was an indicator of network activity and that it would be solid with no activity, as is often the case with most network adapters I've used. So when I saw all this constant/variable blinking, despite not doing anything to generate any network activity, I thought maybe some covert transmissions were going on. Creepy. So I disabled all processes that could communicate on the network, started task manager and network monitor. There was absolutely no network traffic, but this adapter still blinked very quickly and randomly. I came to the conclusion that this adapter behaves like this and convinced myself that this has nothing to do with real network traffic. It's just trying to be a nuisance, but there's nothing that a little well-applied tape can't overcome. (Manufacturer's suggestion: Slow steady blinking when no connection is normal. No activity connection should be active, no blinking. Fast blinking should indicate network activity.) just to make sure they're working. My router uses MAC address filtering, so I have to write down each adapter's MAC address and enter it into the router. I was surprised to see that both adapters reported the same MAC address 00:FF:FF:FF:FF:FF. My first reaction was that I couldn't use two of them on the same network because their MAC addresses would conflict. But after some experimentation, I found that when one of these adapters is installed on a different computer, it reports a different MAC address. I moved the adapters to another computer and the new adapter had the same MAC address on that computer. Therefore, a MAC address is created when you install the software for the adapter, and that MAC address is tied to the computer, not the adapter. This is different from any network adapter I've ever worked with. However, this meant I could use both adapters on the same network. UPDATE 06/14/2019. When I did an in-place upgrade from Windows 8.1 Pro to Windows 10 Pro with this adapter plugged in before, during and after the upgrade, the adapter's MAC address changed. When I started Windows 10 Pro for the first time, it couldn't connect to my router because the new MAC address didn't appear in the router's list of allowed MAC addresses. This was easy to change in the router's MAC filter section, but it's another example of MAC address craziness on this adapter. Note that the adapter's MAC address may change when you perform an operating system update. The adapter is having trouble reconnecting to a network that is not broadcasting its SSID, even though it has been configured to connect without an SSID. I had to keep manually reconnecting to the network. After I changed the router to broadcast the SSID, the adapter automatically reconnected without intervention. UPDATE 06/14/2019. Even while broadcasting the SSID, from time to time (on average twice a week) the adapter lost the ability to see and connect to wireless networks. The blue LED flashes slowly and there are no networks available in the list. I can get the adapter out of this state by disabling the adapter in the control panel and then re-enabling it.