Sony Memory Stick Compatible with PSP 1) Specification: Mspd128m/256/512/1G. Sony brand 2) High data transfers speed, it is 4 times as the speed of the memory stick before! 3) Compatible with the tradition memory stick, at the same time the new style memory stick compatible with the parallel interface more products too! Highly compatible with the current memory stick! 5) New standard memory stick can compatible with all the products which infiltrated global market applied memory stick. Magicgate. Memorystick. Memory stick PRO! 6) Magicgate version safe technology. 7) Read speed: Max >5.45mb/s;write speed: Max >3.5mb/S. 8) Spare protected erase wrongly. 9) Size:21.5mm x 50mm x 2.8 mm. 10)Speciality: Durable, trustiness, high capability, small volume.