Thanks for your reply. I've solved the problem by using a 5-pin motherboard-header-to-USB-A plug cable and simply connected it into one of the USB sockets on the back of the PC. Worked first time.

I have bought a TX50E for my Dell Precision 3640. I have installed it and the WiFi works fine. The Bluetooth doesn't. The motherboard doesn't have an F_USB plug on it but it does have a plug marked...