PBPE-12A9 Home Products Passive Backplane & PICMG SBC PBPE-12A9 PICMG 1.3 Industrial Backplane - PBPE-12A9 12-slot [PCIe x16 (1), PCIe x8 (1, x4 signal), PCI (9)] Features : Fit for 4U chassis Four USB ports Dual SATA ports Datasheet Drivers& Manuals Sales Request