HP 646328-001 - System board - Mobile Intel HM65 chipset with AMD Radeon HD 6490M, 1GB (discrete) graphics memory - For use in discrete models with Retail
HP 571187-001 - System board (motherboard) - No processor (Discrete), M96 chipset, and 1GB graphics memory Retail
HP 748839-001 - System board (motherboard) - HM76 chipset and NVIDIA 820M graphics with 1GB discrete memory - For use in models without Windows 8 Retail
