Lenovo ThinkSystem DE Series Hardware Installation And Maintenance Manual page 133

Host interface card (HIC)
Step 7. Hand-tighten the HIC thumbscrews.Do not use a screwdriver, or you might over tighten the screws.
Step 8. Using a #1 Phillips screwdriver, attach the new HIC faceplate to the controller canister with the four
screws you removed previously.
Go to Step 3: Reinstall controller canister.
Step 3: Reinstall controller canister
Reinstall the controller canister into the controller shelf after installing the new HIC.
Step 1. Turn the controller canister over, so that the removable cover faces down.
Thumbscrews
.
Chapter 3 Hardware replacement procedures
127