HP A6695-69005 - Processor (extender) board - Has four processor sockets - Plugs into the system baseboard Retail
HP D7054-69004 - Processor carrier board - Has four processor slots - Processor Carrier Board - Has Four Processor Slots - Two Boards are Used - Mounts to Processor Baseboard Retail
HP D5028-69007 - System processor board mounted on tray - Has four processor board slots and eight PCI slots Retail