Instructions
Check the system's size and model number to distinguish between the original PSP and the 2000 and 3000 models. The original PSP is bulkier and will bear the model number PSP-1000.
Locate the model number to distinguish between the two versions. You should find it near the bottom of the box or on the rear of the system itself.
Identify the PSPgo by its smaller design and lack of external buttons. You need to slide the screen upwards to find the buttons; it also lacks a Universal Media Disc (UMD) drive. You can also identify it because the box will say "PSPgo" rather than "PSP Slim and Lite" or simply "PSP."