HP Compaq dc7100 MT Hardware Reference Manual page 43

Hardware Upgrades
4. Slide the hard drive down into the drive cage; the drivelock
automatically secures the drive in the bay.
Installing a Hard Drive into the Hard Drive Bay
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CAUTION: Make sure the guide screws line up with the guide slots in
the drive cage. The use of unnecessary force when installing any drive
into the drive bay may result in damage to the drive.
Hardware Reference Guide www.hp.com 2–27