SMUGDESK PA-5181-3A 550W TFX Power Adapter

Exact OEM Replacement for Acer SFF Desktops

This 550W TFX power adapter is a direct replacement for the PA-5181-3A unit used in Acer Veriton E450, D650, S4660G, S2660G, S6660G and X4660G small form factor desktops. It matches factory specifications for a plug-and-play repair of a faulty original supply. The unit delivers rated continuous output with 80PLUS Bronze efficiency and active PFC. It is built for owners of these specific compact systems who need a reliable OEM-standard replacement.

Dedicated Wiring Frees Standard Cabling Effort

The adapter arrives with the original wiring harness including a 6-pin motherboard connector, 4-pin CPU connector and a PCIe GPU connector. This dedicated layout eliminates the need for adapters or custom cables inside the narrow TFX chassis. A stable single +12V rail provides the headroom required for a mid-tier graphics card upgrade and multiple storage drives. The compact form factor fits the SFF enclosure perfectly, leaving the limited internal volume clear for airflow and expansion cards.

Sustained Delivery With Full Protection Suite

Rated for 550W continuous output, the supply maintains stable voltage under prolonged load rather than only in short bursts. Active power factor correction and 80PLUS Bronze certification reduce waste heat during extended operation. Full over-voltage, over-current and short-circuit protection circuits guard connected components during sustained demand. The single +12V rail architecture ensures consistent power distribution to the motherboard, CPU and graphics card throughout heavy workloads.