CAUTION: Many repairs may only be done by a certified service technician. You 
should only perform troubleshooting and simple repairs as authorized in your 
product documentation, or as directed by the online or telephone service and 
support team. Damage due to servicing that is not authorized by Dell is not 
covered by your warranty. Read and follow the safety instructions that came with 
the product. 
2  Place the 2U riser card into the expansion-card bracket. See Figure 3-
39. 
3  Replace the four screws securing the 2U riser card to the expansion-
card bracket. See Figure 3-39. 
4  Place the 1.5U riser card into the expansion-card bracket. See Figure 3-
38. 
5  Replace the two screws securing the 1.5U riser card to the expansion-
card bracket. See Figure 3-38. 
6  Install the expansion card. See “Installing the Expansion Card for 2U 
Node” on page 162. 
7  Replace the system-board assembly. See “Installing a System-Board 
Assembly” on page 143.