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2-2
BPN-NVMe3-216A-N4 Backplane
User's Guide
2-2 Rear Connector and Pin Definitions
Backplane
Main Power
4-Pin Connector
Pin# Definition
1
+12V
2 and 3
Ground
4
+5V
3. Backplane Main Power Connectors
The 4-pin connectors, designated JPWR1
through JPWR3, provide power to the back-
plane. See the table on the right for pin defini
-
tions.
1. - 2. Primary and Secondary Expander Chips
The primary and secondary expander chips
allow the backplane to support dual port, cas-
cading, and failover configurations.
4. - 5. OCuLink Connectors
The OCuLink connectors on both daugh-
ter cards are designated NVMe#0 through
NVMe#3. OCuLink connectors contain PCIe
lanes.