HP 489127-001 - Optical drive extension board - Interconnects the optical drive to the motherboard Retail
HP C1708-60002 - Interconnect board - Interconnects the optical drive to the rest of the unit - Interconnect Board (Interconnects the Optical Drive to the Rest of the Unit) -in Bottom of Unit (Behind Optical Drive) Retail
HP C1700-60007 - Interconnect board - Couples cables from optical drives to other components in the system - Interconnect Board - Couples Cables from Optical Drives to Other Components in the System - Mounts in Bottom of Chassis Retail