SIIG JJ-P04311 PCI High Speed Serial Board Card

SIIG JJ-P04311 is a PCI-based high-speed serial expansion card that adds four RS-232 ports via four RJ-45 connectors. Each port uses a 16550-class UART to provide dependable, multi-serial communication for legacy devices, with advertised data rates up to 230 kbps per port. The card installs into a standard PCI slot in desktop systems and delivers four independent serial channels that can operate concurrently for peripherals such as point-of-sale devices, barcode scanners, modems, and other RS-232-equipped equipment. As part of SIIG’s CyberSerial family, JJ-P04311 targets users who need to expand multiple serial interfaces without resorting to external USB adapters or multiple PCIe cards, offering a compact, four-port solution for reliable, on-machine serial connectivity.