HP Proliant Power Supply PSU 750W G6/G7/G8 HSTNS-PL29

HP 750w Redundant Power Supply Hstns-pl29

HP ProLiant DL G6, G7 & G8 servers DL170h, DL180, DL360, DL370, DL380, DL385 HP ProLiant ML servers ML110, ML350, ML370

P/N: 643955-201, 660183-001, 643932-001, 656363-B21

Ideally these power supply should be bought in pairs for exact match to avoid incompatibility between versions of power supply.