It is a cable for PSP date transfer and Power.

Power Cable

Charge Your Sony PSP System With An USB Port on Your Desktop PC, Notebook PC or Your Playstation2
Convenient, Light Weight, No Extra Cable Required
Charge Your Sony PSP System The Same Way As If You Were Using The AC Adapter

Data Cable

Transfer, Copy, Play Mp3 & Wave Music Files, MPEG-4 Movies Files, JPEG & BMP Image Files, Game Saves On The Fly
Plug & Play Design - No Additional Software Required
Media Files Available All Over The Web Or Create Your Own Media
Transfer & Charge Your Sony PSP System At The Same Time!!

Comptiable with PSP2000 and PSP3000.