Lenovo ThinkSystem SD550 V3 System Configuration Manual page 52

Description
D3 Chassis
1
Node tray rear filler
2
Chassis midplane
3
PSU cage
4
CRPS power supply unit
5
PSU filler
6
Chassis rear shipping brackets (left and right)
7
Node tray front filler
8
Chassis front EIA brackets (left and right)
9
ThinkSystem SD550 V3 System Configuration Guide
44
Type
T2
T1
T2
T1
T2
T1
T1
T1
T1