HP 535802-001 - System board (motherboard) - For use in computers with a WWAN module and UMA graphics subsystem memory Retail
HP 577220-001 - GL40 system board - For use only on computer models equipped with graphics subsystems with UMA memory and not equipped with WWAN ca Retail
HP 577221-001 - GL40 system board - For use only on computer models equipped with graphics subsystems with UMA memory and equipped with WWAN capabi Retail
HP 577225-001 - GM45 system board - For use only on computer models equipped with graphics subsystems with UMA memory and equipped with WWAN capabi Retail
