IBM System X High Voltage DC PDU Installation And Maintenance Manual page 19

Attention: You must install the PDU with the front panel facing either the front
or rear of the rack, either horizontally or vertically with the cable end at the
bottom; do not install the PDU with the front panel facing up or down, or
vertically with the cable end at the top.
Supported orientation
Unsupported orientation
Note:
v Removing the rack doors and side panels might make installation easier. See the
rack documentation for more information.
Ground
Ground
Chapter 2. Installing the 1U PDU vertically in a rack
9