Lenovo ThinkSystem DE Series Hardware Installation And Maintenance Manual page 142

Step 3. Align the three thumbscrews on the HIC with the corresponding holes on the controller, and align
the connector on the bottom of the HIC with the HIC interface connector on the controller card.Be
careful not to scratch or bump the components on the bottom of the HIC or on the top of the
controller card.
Step 4. Carefully lower the HIC into place, and seat the HIC connector by pressing gently on the HIC.
Attention: Possible equipment damage – Be very careful not to pinch the gold ribbon connector
for the controller LEDs between the HIC and the thumbscrews.
Host interface card (HIC)
Step 5. Hand-tighten the HIC thumbscrews.Do not use a screwdriver, or you might over-tighten the
screws.
136
ThinkSystem DE Series Hardware Installation and Maintenance Guide for 2U Enclosures
Thumbscrews