T.F.SKYWINDINTL Dual PSU Power Adapter ATX 24Pin to Molex 4Pin/SATA/6Pin Sync Extender Card

Dual PSU adapter for multi-GPU rigs

This adapter synchronises two ATX power supplies so they start and shut down together, giving a single system the combined wattage of both units. It is aimed at builders running multiple graphics cards or large drive arrays that exceed one PSU's capacity. The board accepts a Molex, SATA or 6-pin lead from the primary PSU and passes the 24-pin signal to the secondary unit. No software configuration is required.

24-pin ATX sync with status LEDs

The decisive specification is the 24-pin ATX female header that mirrors the primary PSU's power-on signal to the second supply, ensuring both rails rise simultaneously. Integrated 3.3 V, 5 V and 12 V LEDs plus a PS-ON indicator show each rail's presence at a glance. This visual confirmation prevents the common mistake of assuming the second PSU is live when only the primary has started.

Plug-and-play with polarity caution

Installation is a straight cable swap: connect the chosen primary lead, seat the secondary 24-pin plug, and power on. The main risk is inserting the 24-pin connector offset by one row, which shorts the PS-ON line and prevents startup. Builders should also verify that the secondary PSU's fan spins before loading the cards, as a dead fan often signals a wiring error rather than a faulty board.