I’m not sure if it works on windows 7 (Haven’t tested it or looked into it), Microsoft says they don’t support it Microsoft Developer , but you could try i suppose.
It requires a fully functional usb 3.0 port, because it needs all the bandwidth. Microsoft recommends an Intel(usually built in) or Renasas(usually an addon card) USB 3.0 controller.
Some “USB 3.0” ports (on motherboards, or expansion cards) use an ASMedia USB 3.0 controller, and Microsoft says they don’t support them because they don’t all have full usb 3.0 specifications. So it may be hit or miss.
Bad / not recommended (uses ASmedia USB 3 controller): Expansion Card: http://www.amazon.com/SD-PEX50064-Revision-Chipsets-Standard-Brackets/dp/B00NDJXGJ2/ref=sr_1_5?ie=UTF8&qid=1452472274&sr=8-5&keywords=ASMedia+USB+3.0
Motherboard with ASmedia USB controller (scroll to USB section):https://www.asus.com/us/Motherboards/P9X79_LE/specifications/
Note: Many newer motherboards/laptops use Intel’s version, which is awesome! (cause intel supports it now), but a few years ago when it first came out ASMedia was the first to put “USB 3” on stuff but was not good at implementing it