HP D2010-69005 - System processor/memory board - System Processor/Memory Bd - Plugs into System Interface Bd Retail
HP A2051-69007 - 64MHz system processor board - 64MHz System Processor Board - Plugs into Slot to the Right of the Multifunction I/O Board Retail
HP A2051-69108 - 96MHz system processor board - 96MHz System Processor Board - Plugs into Slot to the Right of the Multifunction I/O Board Retail