Vertiv DB-25 DTE Female 1x RJ-45, 1x 25-pin D-SUB wire connector

DB-25 DTE Female SST-4P and SST-8P PCI adapters are intelligent, high-speed (up to 920k bps on each port) PCI expansion boards, which provide high performance serial I/O solutions for a PCI bus host computer. All port interfaces are standard RS-232, with full modem control and voltage surge protection on every pin. SST PCI adapters appear to the system host processor as memory. That is, they are memory
mapped devices. Each adapter is automatically mapped into system memory at the time of device driver installation. SST adapters occupy a PCI slot in the host computer and provide the intelligent
functions to "off-load" the CPU from serial communications processing tasks.