CX2550/60/70 M4 Upgrade and Maintenance Manual 107
Expansion cards and OCP mezzanine cards
CX2550 M4 PCIe Slot / OCP slot population order (air cooling)
Pos. Slot Type Mechanical
connector
Electrical
connector
1 PCIe slot 1 (to CPU2) PCI Gen3 x16 X16
2 OCP connector Type A PCI Gen3 x8 X8
3 OCP connector Type B PCI Gen3 x8 X8
4 PCIe slot 1 (to CPU1) PCI Gen3 x16 X16
5 PCIe slot 2 (to CPU1) PCI Gen3 x16 X16