| 1 | Thumbscrews |
| 2 | Status LEDs |
| 3 | Fax port |
| 4 | Foreign interface harness (for connecting third-party devices) |
| 5 | Hi-Speed USB 2.0 printing port |
| 6 | USB port for connecting external USB devices NOTE: For Easy-access USB printing, use the USB port near the control panel. |
| 7 | Lock slot for USB device |
| 8 | Local area network (LAN) Ethernet (RJ-45) network port |
| 9 | Lock slot (locks formatter to chassis) |