Sony playstation 2 multitap adapter lets you connect up to 4 memory cards and controllers. Tested and works great.
Please note that many games don't support 'hot swapping' and require the multi tap/controller/card set up to be connected prior to turning on the system/game. This varies by game title however so if you run into any trouble it's best to consult the game's manual.
This is the multi-tap model only compatible with the original 'fat' model PS2 systems.
Ships next business day.