StarTech.com PCI4S550 PCI Serial Adapter Card

StarTech.com PCI4S550 is a 4-Port PCI RS232 Serial Adapter Card that adds four RS-232 serial ports to a PC via a single PCI slot, using four 16550-compatible UARTs for reliable, low-latency communication. Each of the four ports supports standard RS-232 signaling with data rates up to 115.2 kbps per port, enabling dependable connections to legacy peripherals, industrial controllers, lab instruments, or modems from a single expansion card. The four independent channels support simultaneous data transfers, making it well-suited for instrumentation, data logging, or testing rigs that require multiple serial connections. Typical applications include industrial automation, network equipment console access, and point-of-sale peripherals. Driver software is provided by StarTech for Windows—install by downloading the latest package, extracting, and running Setup.exe as Administrator—and the card is backed by StarTech's lifetime warranty and free lifetime technical support.