All new FTDI chipset. For reliable and compatible replacement cable for APC PDU Cable 940-0144 look to KonnectIT Brand cables. KonnectIT cables are fully tested on actual units they are designed to be compatible with. Our durable molded cable is designed for modern computers with no DB9 serial port. Connecting to a USB port, this cable provides a convenient replacement to the original APC 940-0144 and APC 940-0144A PDU Cable. Compatible with APC metered and switched PDU: AP78xx AP79xx AP86xx AP88xx AP89xxAP7000AP8000AP9000AP6000AP7721AP7723AP7730AP7752