Tripp Lite POS500 POS Series 500VA Tower Standby 120V UPS with USB port 500VA/300 Watts low-profile tower 120V standby UPS Offers surge suppression and long-lasting battery support for Kiosks, Point-of-Sale, Network Workstations and standalone PC applications Special housing with short 6.54 inch height, thin 3.58 inch width and rear-facing outlets is compatible with UPS compartments in many kiosks and other equipment housings 3 UPS battery supported outlets, 3 surge-only outlets USB port, TEL/DSL protection, 99% efficient