The HP 438249-001-RFB systemboard is a refurbished server motherboard intended for a dual-socket, quad-core processor configuration.
HPE identifies the corresponding 438249-001 system I/O board as supporting selected quad-core Intel Xeon 5000 Harpertown and Nehalem processors. This gives a clear processor family reference for the board.
HPE also specifies that processors used together must have the same spare part number. The listing identifies this item as refurbished.