The Sunix SER5416H is a high-performance PCI Express serial communication expansion card designed to add 16 independent RS-232 ports to your system. Featuring the advanced SUN1999 UART controller (compatible with 16C950), this board supports blazing communication speeds up to 921.6 Kbps. It complies with PCI Express Base Specification Revision 1.1 and is compatible with x1, x2, x4, x8, and x16 lane PCIe connectors.

Ideal for industrial automation, telecommunications, and legacy device integration, the SER5416H ensures reliable data transfer with on-chip hardware automatic flow control (supporting None, Xon/Xoff, RTS/CTS modes) and a 128-byte hardware FIFO buffer for minimized data loss.

The serial interface supports full RS-232 signaling (TxD, RxD, RTS, CTS, DTR, DSR, DCD, GND) via a Mini SCSI 68 female connector, with included cables typically allowing breakout to 16 DB9 serial ports. The board incorporates robust hardware protection with built-in ±15 kV ESD protection in compliance with IEC1000-4-2 standards, ensuring durability in harsh electronic environments.

Installation is simple with Plug-and-Play support and BIOS-assigned I/O addresses and IRQs. The device holds certifications for CE, FCC, RoHS, and Microsoft WHQL, guaranteeing compatibility across multiple platforms including Microsoft Windows (10, 11, Server versions), Linux (kernels 2.x through 6.x), DOS, and other UNIX-like systems.

Compactly engineered with PCB dimensions of 120 x 110 mm and a standard full-height 121 mm bracket, it fits standard PCIe slots with ease. Sunix provides full driver support, documentation, and accessories to streamline deployment.

Perfect for expanding serial connectivity in modern industrial and legacy system environments where multiple RS-232 ports are essential.