Dell PowerEdge R420xr Manual De Instrucciones página 10

Figure 1-4. Installing the New System Board Lock
1 square feature
3 tab
Securing Full Half-Length PCIe Card on Riser 1
1 Install the full half-length PCIe card on riser 1.
2 Slide the system board lock in the direction of the arrow such that the edge
of the PCIe card is secured against the system board lock as shown in
Figure 1-5.
8
Installation Guide
2 system board lock (DPN: V5PYK)