I tested it at Dell Latitude E6510, E6500, D820 under Windows XP(x32), 7(x64), 10(x64). It works perfect and stable at 2.4GHz/5GHz up to (150/300MBps) speed with ZyXEL and Motorola SBG6580 routers. I saw 420-450MBps a couple of times connecting via fast WiFi networks, too. Never used it for gaming, just for business.