Evner,   There are that many as there have been 5 different versions. The latest of which is the 1100w V4 (part # HT6GX) Hope this helps.
Why are there so many different Gen 12 1100W PSUs? Dell Part# W933GDell Part# NTCWPDell Part# 331-5926Dell Part# YT39YDell Part# 38GYJDell Part# GDPF3Dell Part# GYH9VDell Part# HT6GXDell Part# L1100E-S0Dell Part# E1100-S0Dell Part# XCVWK The same part numbers are compatible with R520 R620 R720 R720XD R820 R920 T420 T620 servers. Does anyone know the difference amongst these PSUs? Which is the latest model? Which is the best and why?
Why are there so many different Gen 12 1100W PSUs?