- Check that your PSP® system is set to USB mode. If it is not, select(USB Connection) under (Settings).
- Check that you have a Memory Stick Duo™ media inserted in your PSP® system.
- Check that an operation system that supports USB mass storage class is installed in the personal computer in use.
- When using a USB hub or other devices, depending on the operating environment of the PC, the Memory Stick Duo™ inserted in the system may not be recognized by the PC. Try connecting the system directly to the PC using a USB cable.
- If “USB Charge” under (System Settings) is set to “On”, the device may not be recognized.



