I purchased a BT4.0/WifiAC card from the HK seller on eBay: http://www.ebay.com/itm/252317542350?_trksid=p2060353.m2749.l2649&ssPageName=STRK:MEBIDX:IT After installing them, they were detected fine on Mac OS (both Yosemite and El Capitan), the only thing is that in El Capitan Handoff/Continuity/Airdrop are not working despite trying 3 different methods (SIP, deleting bluetooth.plist, and logging out and in on iCloud for all devices). Yosemite worked fine though. But now when I boot into Boot Camp, both BT4.0 and Wifi drivers are not to be detected by anything. I tried installing Boot Camp 5.1621 or something latest (downloaded from El Capitan's Boot Camp Assistance tool), I even tried 6.0 drivers, they all said they were installed but they are not detected in Device Manager. Funny thing is Wifi seems to be working right now because of Driver Booster. But I really need the BT driver. I tried Driver Booster too but no luck. I tried so many different methods but not working. I have a 2010 Mac Pro 6 core 3.33ghz. The module seems to be genuine product but if the product is a bootleg, I don't know if this is the case why it's not working in Windows 10. Anyone who upgraded their BT4.0/WifiAC card and have a Boot Camp, it would be great if you can shed some light on this.