QNAP SP-B01-500W-S-PSU 500W Replacement Power Supply Unit
Overview
The SP-B01-500W-S-PSU is a 500W replacement power supply unit designed for QNAP B01-type chassis. If a PSU in a redundant-power NAS enclosure fails or degrades, swapping it out with a factory-matched unit like the SP-B01-500W-S-PSU restores full redundancy without taking the system offline — which matters in any environment where continuous storage availability is non-negotiable. It ships as a Delta-built unit with Active PFC and a 90–264VAC wide input range, so it handles both North American 120V and international 240V circuits without adaptation.
Compatibility
This PSU is designed specifically for the QNAP TVS-1271U-RP rackmount NAS. It is a B01-type chassis PSU; do not attempt to fit this unit into other QNAP enclosure families (e.g. TS-x73U, TVS-x72XT) — chassis PSU form factors are not cross-compatible across QNAP product lines. If you are sourcing a spare or replacement for a different NAS storage platform, confirm the chassis type and PSU slot specification before ordering.
Installation Notes
The unit slides into the dedicated PSU bay on the TVS-1271U-RP. Wide-range AC input (90–264VAC) means no manual voltage switching is required — the Active PFC circuit self-adjusts to the supplied line voltage. Rated output is 500W; verify your installed drive and expansion load does not exceed PSU headroom before deploying. For guidance on power supply selection in NAS environments, factor in per-drive spin-up current, not just steady-state draw. This is a like-for-like hardware replacement — no firmware or software configuration is needed after installation.
