EXSYS 4-Port RS-232 PCI Serial Card with FTDI Chipset (EX-41084)

Legacy serial devices such as industrial controllers, point-of-sale terminals, and laboratory instruments often require reliable RS-232 connectivity, but modern computers rarely include enough native COM ports. The EXSYS EX-41084 solves this by adding four high-speed RS-232 ports through a single PCI slot.

Who is it for

System integrators, industrial automation engineers, and IT professionals who need to connect multiple serial peripherals to a desktop PC. It suits applications requiring stable, low-latency communication across Windows, Linux, or macOS.

Main features

• Four RS-232 ports via one PCI slot
• FTDI chipset for broad OS compatibility and driver support
• Each port supports data rates up to 921.6 Kbps
• 128-byte FIFO buffers per port reduce CPU load
• Supports 3.3V and 5V PCI bus voltages
• Hardware and software flow control

Specifications

• Host interface: PCI 32-bit
• Number of ports: 4
• Connector type: 4 x DB9 male
• Serial standard: RS-232
• Chipset: FTDI
• Baud rate: 921.6 Kbps max per port
• FIFO: 128-byte transmit, 128-byte receive per port
• Data bits: 5, 6, 7, 8
• Stop bits: 1, 1.5, 2
• Parity: Even, Odd, None, Mark, Space
• Flow control: Hardware (RTS/CTS), Software (XON/XOFF)
• Compatible operating systems: Windows XP/Vista/7/8/10/11, Windows Server, Linux, macOS

Tips

Install the driver before inserting the card to avoid conflicts. For industrial environments, secure the card bracket firmly and use shielded serial cables to minimise interference.