ADD2PSU Dual PSU Synchronous Start Adapter Board with LED Indicator, ATX 24Pin to SATA Sync Trigger Extension Cable for High Power Graphics Card Extra Power Supply

This ADD2PSU dual power supply sync adapter solves power shortage troubles when using power-hungry flagship graphics cards or multiple GPUs in one PC. It links your primary and secondary PSU together, so the auxiliary power unit automatically starts and shuts down in tandem with the main power supply, no manual switching required. Built with a clear LED indicator lamp, the board lets you instantly identify if the secondary PSU receives the startup signal, simplifying wiring fault inspection during assembly and maintenance. It supports two common trigger connection methods via ATX 24Pin header or SATA power port, matching different internal cable layouts of various PSUs and chassis.

Stable control circuit design delivers consistent startup signal transmission, avoiding delayed boot, power flicker or hardware crash under long-duration full-load gaming, video rendering and GPU computing tasks. The slim circuit board fits neatly inside full-tower, mid-tower and custom liquid cooling cases without occupying valuable installation space. No drivers or BIOS adjustments needed for plug-and-play installation, fully compatible with all standard ATX power supplies and mainstream NVIDIA & AMD desktop graphics cards. It is a cost-effective hardware upgrade accessory for custom high-end gaming rigs, multi-card workstations and crypto mining machines that exceed the load limit of a single power supply unit.