Wait for the "PlayStation(R)Vita" icon to appear under Devices and Drives in your File Explorer. Right-click the icon and select Properties . The serial number should be listed there.
The fastest way to find the serial number is by looking at the barcode sticker affixed to the outer shell of the console. Turn your PS Vita upside down so the bottom edge faces you. Locate the white barcode sticker near the charging port. check ps vita serial number
The sticker contains a barcode. Below or next to the barcode, you will find a 14-character string. Wait for the "PlayStation(R)Vita" icon to appear under