APC Rack PDU AP78xx pinouts
APC RJ12 serial cable pinout RJ12 to DB9. Compatible with Rack PDU (AP78xx, AP79xx, AP86xx, AP88xx, AP89xx) and 2G Rack Automatic Transfer Switches (AP7752, AP7752, AP7730, AP7732, AP7721, AP7723). APC part # 940-0144A
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.