Western Digital Green Desktop WD20EARX - Internal Hard Drive 3.5 '' SATA III Cache IntelliPower 64MB 2TB (Personal Computers)
This is my 6th Green at Western Digital disk (1to 2 * in the pc, 1.5TB * 1 in usb enclosure, 3to * 3 in a nas). Never worry, nickel for use type storage, especially in a NAS or USB box, where a disc uses "green" makes sense. Low noise, low power