Port Information: USB ports are not colour coded and will be marked with a logo like this:

Connection Information: The plug is inserted into the port on your computer like this:

You can also use the port on your keyboard, but the more distance you put between your scanner and the computer's port, the weaker the power supply.

PS2 Connector

For older PCs

Cable Plug Information: PS2 is a cylindrical metal sheath with six metal pins and a plastic plug contained inside. From the end it looks like this:

ADB Connector

For older Macs.

Cable Plug Information: ADB is a cylindrical metal sheath with four metal pins and a plastic plug contained inside. From the end it looks like this: