60x25mm rear system fan with

HP 834547-001 rear system fan is a replacement service part listed for the Z240 SFF. It is intended for the rear system-fan position, giving this compact desktop a matching fan assembly for that location.

The fan measures 60 × 25 mm, a useful identifier for this specific part. The listing names it as an SPS rear system fan for the Z240 SFF, so its stated system association is clear. This description covers the listed part and its dimensions; it does not assume other compatibility or package contents.