Lenovo ThinkSystem SR645 Maintenance Manual page 144

Step 3. Put the backplane down into place.
Figure 50. Installation of backplane for four 3.5-inch hot-swap drives
a. Lean the backplane backward, align its bottom with the two pins on the front chassis base,
then align the two holes on the backplane with the two pins on the front drive cage so that the
holes can pass through the two pins.
b. Close the release latches to secure the backplane in place.
Step 4. Connect the cables to the system board or expansion slots. See 2.5-inch/3.5-inch drive backplane
(power) and 2.5-inch/3.5-inch drive backplane (signal).
After you finish
1. Reinstall all the drives and drive fillers into the drive bays. See Install a hot-swap drive.
2. Complete the parts replacement. See Complete the parts replacement.
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