| 5851-7346 | Scanner control board (SCB) |
| 5851-7347 | Scanner control board (SCB) |
| 5851-7764 | SCB Enterprise |
| B5L28-67902 | Internal USB Ports |
| RM2-1318-000CN | Low voltage power supply PC board assembly - For 110 VAC operation |
| RM2-1318-010CN | Assy-Lv Power Supply Pcb 110v-127v |
| RM2-1319-000CN | Low voltage power supply PC board assembly - For 220 VAC operation |
| RM2-9480-000CN | Assy-Dc Control Pcb HP DC Controller PC Board Assembly for LaserJet M631 / M632 / M633 and similar models. |
| RM2-9481-000CN | Assy-Dc Control Pcb HP DC Controller PC Board Assembly for LaserJet M631 / M632 / M633 and similar models. |
| RM2-9493-000CN | Assy-Dc Control Pcb HP DC Controller PC Board Assembly for LaserJet M631 / M632 / M633 and similar models. |
| RM2-7645-000CN | Memory PC board assembly |
| RM2-8537-000CN | Assy-Pre Exposure Pcb |
| RM2-8767-000CN | Feeder controller PC board assembly |
| RM2-8785-000CN | Envelope feeder controller PC board assembly |
| RM2-8807-000CN | 3x550 Sheet feeder stand paper deck controller PC board assembly |
| RM2-8827-000CN | 1x550 Sheet feeder stand paper feeder controller PC board assembly |
| RM2-8847-000CN | Staple/Stacker PC board assembly |
| RM2-9020-000CN | Paper deck controller PC board assembly |
| RM2-8946-000CN | Pre-exposure PC board assembly |