Can't use 2 pads/sticks at the same time
This adapter works fine in single player mode.

When you plug in a second controller (following proper procedure of disconnecting USB, plug in second controller, then reinsert USB), the adapter becomes haywire for player 2 and detects inputs from both player one and two while having autofire on with no way to disable it.

Useful one
Very great item for all usage: console emulation, for pc.
And easy to use. Recommended if you like RPG games.

Works well
The included software allows you to use the controller for most games and using something like JoytoKey, you can use your controllers on anything else. Works on Vista. No noticeable lag.

Great product!
It's worked for over 3 years now and it's as good as new. I have 2 and they both work perfectly. ¡Can even play with 4 people some N64 games! It also works on Mac OSX, which has increased my love for this device.

If you're looking for a way of plugging your PS2 controllers on your computer, be so Windows or Mac, this is a good choice.

It's 'Okay'
Works with most Emulators, and if it doesn't you can usually get around it using a keyboard emulator such as joy2key. Not the best thing ever though it does not work with M.U.G.E.N. (without keyboard emulation) or my copies of Guilty Gear XX and Isuka. Which was the main reason I got it. Also there doesn't seem to be any sort of tech support for this device. Oh well, like I said it's 'Okay'.