The APC BE3500 Backup UPS with Es 350 Battery and Surge Protection is a reliable and efficient uninterruptible power supply unit designed for home or office use. With compatibility for 120V systems, this APC product features surge protection to safeguard your equipment from power surges. The 4 pin 12V connectors make it easy to connect and use, while the black color adds a sleek and professional look to your setup. Perfect for keeping your devices safe and powered during outages or power disruptions.