SBC with dual M.2 (SATA or NVMe) : rSBCs

sbc slotThe 7-slot air-cooled Chassis and Backplane incorporates slots for up to four conduction-cooled 3U VPX Payload Boards, plus a 100GbE Switch, SBC, and VITA 62 power supply, deliveringIf you're looking to go as small as possible, a pcie x16 slot can be added through a m.2 NVMe slot or 40gbps port or oculink. In the resource below on the full and simpler lists there is a column