HP 336964-001 - Mother board (system board) for full-featured (FF) models, one fan (1F) form factor - Does not include processor Retail
HP 344178-001 - Motherboard (system board) - For full-featured (FF) models supporting the three-fan (3F) configuration - Does not include processor Retail
HP 319453-001 - Infrared board for 1F (one fan) chassis - With infrared capability for full-featured models only Retail
HP 331565-001 - Enclosure cover (chassis top) for 3F (three fan) chassis with full-featured (FF) form factor Retail