Dell PowerEdge B02S Hardware Owner's Manual page 19

For M2050/M2070/M2070Q/M2075/M2090 Cards
1. Connect PCI power cable.
2. Insert the PCIe card by 45 degree and push it into the socket vertically.
CAUTION: Care should be taken to prevent damage to components on the back side of the PCIe card. Make sure the card does
not drag across the card mounting standoffs of the cage when inserting the card into the socket.
3. Secure the card with screw.
4. Attach the support bracket on the PCIE board and secure it in place with 4 screws.