APC Back-UPS ES 550 pinouts
Кабель для APC BackUPS BE350C,BE500C,ES 550 pinout
APC by Schneider Electric, formerly known as American Power Conversion Corporation, is a manufacturer of uninterruptible power supplies, electronics peripherals and data center products.
APC was founded in 1981. APC main focus is power protection devices. They introduced its first UPS in 1984.