The 6ES7972-0BA12-0XA0 is a PROFIBUS DP Fast Connect Sub-D plug (9-pin male) for Siemens S7-300/400 systems. It supports PROFIBUS DP/V0 communication at 9.6 kbps to 12 Mbps, featuring screwless Fast Connect termination for shielded 2-wire cables. An integrated switch enables network termination with 110–120 Ω resistance for end nodes.