Dell PowerEdge R650 power cord
Required cable for the common R650 PSU: IEC C13–C14. 100–240 V / 10 A class on the jumper.
Dell’s C13 to C14 PDU-style cords (example 450-ABLE, 0.6 m, 10 A) list PowerEdge R650 in the compatibility list. Pair with a C13 PDU outlet. If the PDU is C19-only, use C13–C20 and stay at 10 A on the C13/C14 side.
Worked PDU examples: R650 + AP8853, R650 + AP8941 (C13–C14; AP8941 has 21 C13 and 3 C19).