QNAP PWR-ADAPTER-90W-A01 90W External Power Adapter
Overview
The PWR-ADAPTER-90W-A01 is QNAP's 90W external power adapter, designed as a direct replacement or spare supply for compatible QNAP NAS enclosures. If your original adapter fails or you need a verified spare on the shelf for a critical storage deployment, this is the factory-sourced replacement — not a third-party substitute that may underdeliver under sustained disk load. At 90W, it provides adequate headroom for multi-drive NAS units running 24/7 in surveillance or SMB file-server roles.
Compatibility
Verified compatible with the following QNAP NAS models: QNAP NAS enclosures including the TS-431K and TS-431P3. These are 4-bay ARM-based units commonly deployed in small branch office and edge surveillance storage roles. Do not use this adapter with higher-wattage enclosures — QNAP's NAS power supplies are model-matched; substituting a lower-rated supply on a heavily loaded 6- or 8-bay unit risks instability under peak disk activity. If you are unsure which power adapter your enclosure requires, cross-reference your NAS model number against QNAP's compatibility documentation before ordering.
