Unused old stock item. Nice 5 VDC power supply. Model HF25W-SPL-5. 100-240 VAC input, adjustable 5 Volt output (see the trim pot beside the output connectors). Current rating is a 5 Amp design with a 0.5% load regulation. Four pin output, 2 neg and 2 pos. Both track the trim pot adjustment. Green LED power indicator. Made by Hengfu and not the typical junk designs. See last image for specs. Circuit card size about 4-1/4" x 2-1/2" and about 1-1/8" in height.