Lenovo ThinkSystem DS Series Hardware Installation And Maintenance Manual page 149

Table 34 5U84 Power supply unit specifications
Specification
Holdup time
Hot pluggable
Mains inlet connector
Weight
Cooling fans
Measurement/description
5 ms from ACOKn high to rails out of regulation (see SBB v2 specification)
Yes
IEC60320 C20 with cable retention
3 kg (6.6 lb)
Separate fan cooling module CRU provides 2 adjacent fans: 80x80x38mm
Power supply unit 149