Where is the eject button on the psp go?

On the PSP Go, there is no physical eject button for the game discs, as it does not use UMD discs. Instead, it relies on digital downloads from the PlayStation Store. To delete games or applications, you can navigate to the content on the XMB (Cross Media Bar), press the "Select" button, and then choose the option to delete. For transferring content, you'll use the USB connection to a computer.