1 | Rear USB port | Attach a keyboard to the printer. |
2 | USB printer port | Connect the printer to a computer. |
3 | Ethernet port | Connect the printer to a network. |
4 | USB wireless port | Attach an optional wireless network adapter. |
5 | Security lock port | Lock the system controller board. |
6 | Printer power cord socket | Connect the printer to a properly grounded electrical outlet. |