Lenovo ThinkSystem D4390 Hardware Installation And Maintenance Manual page 13

Figure 1-6: Modules on the rear of D4390
Item
① PSU1
② PSU2
③ DC1
④ ESM1
⑤ DC2
⑥ PSU3
⑦ PSU4
⑧ ESM2
Table 1-3: Modules on the rear of D4390
Figure 1-7 below is the top view of the chassis showing D4390 drive numbering.
Description
PSU 1
PSU 2
DC-DC Module 1
ESM Canister A
DC-DC Module 2
PSU 3
PSU 4
ESM Canister B
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