•  Read “Installation Guidelines” on page 47 and “Safety inspection checklist” on page 48 to ensure that you 
work safely.
•  Power off the server and peripheral devices and disconnect the power cords and all external cables. See 
“Power off the server” on page 62.
•  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- 
DR4X1YAcp9wFKhwj_tLQ5Y
.
Procedure
Note: The riser bracket in below illustrations might look different from your riser bracket. The removal 
procedure is the same.
Step 1.  If the server is installed in a rack, slide the server out on its rack slide rails to gain access to the top 
cover, or remove the server from the rack. See 
“Remove the server from rack” on page 63.
Step 2.  Remove the top cover. See “Remove the top cover” on page 277.
Step 3.  Disconnect the cable of the serial port module from the system I/O board. 
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 processor board or system I/O board.
•  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 239. Disconnecting the cable from the system I/O board
Step 4.  Remove the riser bracket from the server. 
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ThinkSystem SR665 V3 User Guide