>>720699978
>>720700049
uhhhh its different. yes >>720700049-san, its just a memory card that makes gaems regionfree and like, you can run emulators and shit off of the USB port or whatever non-official software. I initially put some games on the USB and it worked, but I ended up upgrading to HDD since I had a fat PS2 anyway. I use an application called OPL but the community recently has a new better software that does PS1 games better.
even so, OPL is super super good and I can adjust resolution on some games and do cheatcodes and stuff (lizardman in SoulCalibur2 was taking way too long)

If you wanna stick to skinny PS2 there are guides out there for SD and USB, and with a skinny thats your only options I think but it might be ok.