Here are some of the first close-up pictures of the Twins Series 500W redundant power supply for ATX desktops. The PSU is essentially a hot-swapping and redundancy enclosure for two 500W 80 Plus Gold-efficient 1U server PSUs, which fits into a standard ATX (PS/2) size. The enclosure features the unit's cabling on one side, and the hot-swap bays of the two subunits on the other. The enclosure also features a USB system interface, with which you can monitor the performance of each of the two subunits, and their reliability, with programmed alerts, via included software. FSP is including two 500-Watt subunits, which are each cooled by their dedicated 40 mm server-grade fans. The arrangement is ideal for home-servers that stay on 24/7, and for mission-critical workstations.