TP-LINK PSM500-AC Adapter Up to 500 W output power, Hot-swappable, 53.5 V DC output voltage, Protection against surges, under voltage, short circuit and excess current. Compatible with SG6428XHP, SG6654XHP, S6500-24GP4XF, S6500-48GP6XF, S6500-24MPP4Y, S6500-48MPP6Y