•  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.  Touch the static-protective package that contains the internal CFF HBA/RAID adapter to any 
unpainted surface on the outside of the server. Then, take the internal CFF HBA/RAID adapter out 
of the package and place it on a static-protective surface.
Step 2.  Align the notches on the tray with the pins on the chassis, place down the internal CFF HBA/RAID 
adapter, and slightly slide it as shown to secure it on the chassis. 
Figure 71. Internal CFF HBA/RAID adapter installation
Step 3.  Connect cables to the internal RAID adapter. See Chapter 6 “Internal cable routing” on page 217.
After you finish
Complete the parts replacement. See 
“Complete the parts replacement” on page 215.
Intrusion switch replacement
Use this information to remove and install an intrusion switch.
The intrusion switch informs you that the server cover is not properly installed or closed by creating an event 
in the system event log (SEL).
Remove an intrusion switch
Use this information to remove an intrusion switch.
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ThinkSystem SR635 V3 User Guide