Writing this review as an FYI for others who are considering buying the adapter.
Got this and a PS2 controller when I found that I was unable to customize the controls for the Xbox 360 PC controller in the Assassin's Creed games.
Discovered that when plugged into a USB3 slot on my pc it comes up as "Unknown Device" in Device Manager with no controller showing under Devices and Printers. Only when I plugged it into a USB2 slot did it show as Twin USB Joystick under Devices and Printers.
Found that I was also able to customize the controls for the controllers in AC2 which was my main reason for purchasing the adapter.
If the adapter had worked with USB3 then I would've given it 5 stars but knocked 2 stars of due to the fact that USB2 will become obsolete rather quickly with the rise of USB3.
Perhaps the makers of this adapter should think about bringing out an updated version that will work with USB3.
Edit: Found that I need to customize the controls each time I start a game even if it's the same game.
Edit 2: Downgrading my rating to 0 star as the analogue light on the PS2 controller kept going out after I'd been playing for a while making it unusable even after rebooting my PC. Btw I'm using win7 pro 64 bit as my OS