Lenovo ThinkSystem SR950 Setup Manual page 366

The power-control button on the device and the power switch on the power supply do not turn off the
electrical current supplied to the device. The device also might have more than one power cord. To
remove all electrical current from the device, ensure that all power cords are disconnected from the
power source.
"
CAUTION:
Make sure that all server power cords are disconnected from their power sources before performing
this procedure.
Before you remove the riser bracket:
1. Disconnect and label all cables connected to adapters in the I/O tray; then, remove the I/O tray. See
"Remove the I/O tray" on page 334.
2. Remove the riser for slot 10 to 15 (riser 2). See "Remove the riser for slot 10 to 15 (riser 2)" on page 359.
3. Remove any adapters that are installed in slots 14 or 15. See "Remove a PCIe adapter from slot 10 to
15" on page 296.
Complete the following steps to remove the riser bracket.
Figure 112. Riser bracket removal (slot 14 to 15)
Step 1. Open the retaining clips.
Step 2. Slide the bracket from the riser.
After you remove the riser bracket:
Remove the riser for slot 16 to 17 (riser 3)
The riser for adapter slot 16 to 17 is in the I/O tray that is accessed from the rear of the server. After removing
the I/O tray, loosen the captive screw that secures the riser to the I/O tray; then, remove the riser from the I/O
tray.
S002
ThinkSystem SR950 Setup Guide
362
" on page 56 " " on page 254