The following illustrates how to remove the 2.5-inch rear drive assembly.
Attention: 
•  Read 
“Installation Guidelines” on page 45 and “Safety inspection checklist” on page 46 to ensure that you 
work safely.
•  Power off the server and disconnect all power cords for this task.
•  Prevent exposure to static electricity, which might lead to system halt and loss of data, by keeping static- 
sensitive components in their static-protective packages until installation, and handling these devices with 
an electrostatic-discharge wrist strap or other grounding system.
Watch the procedure 
A video of this procedure is available at YouTube: 
https://www.youtube.com/playlist?list=PLYV5R7hVcs- 
DrpxDWLMfgtXO4O6BVYTim
. 
Procedure
Step 1.  Remove the top cover. See “Remove the top cover” on page 212.
Step 2.  Remove the drives or drive fillers installed in the rear drive cage. See 
“Remove a 2.5-inch hot-swap 
drive” on page 99
.
Step 3.  Disconnect the rear drive cage cables from the system board or the PCIe adapter. See 
Chapter 6 
“Internal cable routing” on page 217
. 
Notes: 
•  If you need to disconnect cables from the system board assembly, disengage all latches or 
release tabs on cable connectors first. Failing to release the tab before removing the cables will 
damage the cable sockets on the system board assembly. Any damage to the cable sockets 
might require replacing the system board assembly.
•  The connectors on your system board assembly might look different from those in the 
illustration, but the removal procedure is the same.
1.  Press the release tab to release the connector.
2.  Disengage the connector from the cable socket.
Figure 117. Disconnecting cables from the system board assembly
170 ThinkSystem SR635 V3 User Guide