The WICO keypad is a wonderful thing to have for the 5200 and is one of my most treasured items. If you have the keypad, you don't need the Y-cable; you can plug the WICO joystick right into the keypad. The Y-cable is used if you have the WICO joystick and a regular 5200 controller.

It's a decent enough joystick, but the ultimate setup is having the WICO keypad, the Redemption 5200 adapter (Sega Genesis version), and the Epyx 500XJ joystick for the Sega Master System (identifiable by its two fire buttons and auto-fire switch).