Back and side view Figure 1-3 Back and side view Figure 1-4 Transfer belt (ETB) and print cartridges 1 Transfer belt (ETB) 2 Print cartridges CAUTION Do not place anything on the transfer belt , which is located on the inside of the front door. Otherwise, the printer may be damaged, adversely affecting print quality. ENWW Walk around 7 1 On/off switch 2 Power connect ion 3 Engine test bu tton access door 4 Access door 5 Dust cover 6 HP built-in inte rnal print server for connecting to a 10/100Base-T network 7 USB connectio n