Dell PowerEdge VRTX User Manual page 16

Item Indicator, Button, or Connector
3 CMC connector ports (2)
4 Power indicator (CMC 2)
5 Status/identification indicator (CMC 2)
A Back Panel view of the chassis is given here with a table that lists the parts and devices available in the CMC.
Item Indicator, Button, or Connector
1 PCIe expansion card slots low-profile (5)
2 PCIe expansion card slots full height (3)
3 CMC GB Ethernet port (CMC-2)
4 CMC GB Ethernet port (CMC-1)
5 Serial Connector
6 Blower modules (4)
7 I/O module ports
8 PSU 4
9 PSU 3
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