110 Upgrade and Maintenance Manual CX2550/60/70 M4
Expansion cards and OCP mezzanine cards
6.1.2 CX2560 M4 / CX2570 M4
These server nodes can be flexibly expanded with up to two expansion cards
PCIe 3.0 x16 (via riser module) and one OCP PCIe x16 mezzanine card.
The CX2570 M4 server node additional uses two PCIe Gen3 x16 connectors to
support a GPGPU extension tray or an SXM2 extension tray.
Figure 28: CX2560 M4 / CX2570 M4 PCI slot and OCP slot overview
CX2560 M4
Pos. Slot Type Mechanical
connector
Electrical
connector
1 PCIe slot 2 (to CPU1) PCI Gen3 x16 X16
3 PCIe slot 1 (to CPU1) PCI Gen3 x16 X16
4 OCP connector Type B PCI Gen3 x8 X8
5 OCP connector Type C PHY - -
6 OCP connector Type A PCI Gen3 x8 X8
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