| IR4041K512NI | Scanner Control Board (SCB) - Provides timing and control for the flatbed scanner |
| IR4041K512NR | Scanner Control Board (SCB) - Provides timing and control for the flatbed scanner |
| IR4041P522NI | Flatbed scanner inverter PC board - Provides regulated voltage for the scanning lamp |
| CB425-67911 | Formatter PC board assembly - For LaserJet M4345MFP |
| Q3701A | Fax printed circuit assembly (PCA) - Accessed from the rear of the unit - Located on the formatter boardHP LaserJet analog fax accessory 300 |
| Q3701-60020 | Fax printed circuit assembly (PCA) - Accessed from the rear of the unit - Located on the formatter boardHP LaserJet analog fax accessory 300 |
| Q3701-60021 | Modem PCA - HP LaserJet analog fax accessory 300 |
| Q3701-60004 | Fax printed circuit assembly (PCA) - Accessed from the rear of the unit - Located on the formatter boardHP LaserJet analog fax accessory 300 |
| Q3701-60010 | Fax printed circuit assembly (PCA) - Accessed from the rear of the unit - Located on the formatter boardHP LaserJet analog fax accessory 300 |
| Q3701-60012 | Fax printed circuit assembly (PCA) - Accessed from the rear of the unit - Located on the formatter boardHP LaserJet analog fax accessory 300 |
| Q3942-67901 | LaserJet 4345 MFP Formatter assembly update part number. |
| Q3942-67906 | LaserJet 4345 MFP Formatter assembly |
| Q3942-69001 | LaserJet 4345 MFP Formatter assembly - unit |
| Q3942-69009 | LaserJet 4345 MFP Formatter assembly unit. |
| Q3942-69011 | Formatter PC board assembly - For LaserJet 4345 MFP |
| RM1-1379-000CN | Reversing unit intermediate PC board |
| RM1-1041-000CN | Engine power supply board - 110VAC |
| RM1-1041-040CN | Engine power supply board - For 110 VAC |
| RM1-1042-000CN | Engine power supply board - 220VAC |
| RM1-1042-040CN | Engine power supply board - For 220 VAC |
| RM1-1122-000CN | Driver PCA - 500 sheet feeder driver PCA |
| RM1-1354-000CN | DC Controller board - DC Controller PCA for LaserJet 4345mfp series |
| RM1-1403-050CN | DC Controller board - DC Controller PCA for LaserJet 4345mfp |