PCIe-S114i PCI Express, Serial Communication Board with 4 Isolated RS-232 ports


Key Features

  • Supports PCI Express x1
  • Provides 4 isolated RS-232 ports
  • 256-byte Hardware FIFO for Each Port
  • Transmission Speed of up to 921600 bps
  • Short Card Design


The ICP DAS PCIe-S114i communication card provides four isolated RS-232 serial ports. Each port is equipped with a 256-byte hardware FIFO, and enabling communication speeds up to 921600 bps. The PCIe-S114 card supports automatic COM port allocation by drivers.

The data lines of each serial ports on PCIe-S114i card comes with photocouplers design. The on-board photo couplers use a short optical transmission path to transfer a signal between circuit components, and keep the data lines electrically isolated. It can help cutting down on ground loops, common mode voltages and block voltage spikes, provide electrical isolation, and offer significant protection from serious over-voltage conditions in one circuit affecting another.

In harsh industrial environments, the on-board ESD protection components divert potentially damaging charges away from sensitive circuit to protects the computer and equipment from the sudden and momentary electric currents.

The PCIe-S114i serial communication cards is designed for use with intelligent devices like bar code reader, serial printers, intelligent sensors, instrumentation equipment, computers and almost any device with an RS-232 port. Drivers provided for a broad selection of operating systems, including 32/64-bit Windows XP/2003/2008/7/8/10 and Linux Kernel 2.6.31 to 5.16.0.

Hardware FIFO up to 256 bytes:

FIFO stands for “First In, First Out”, an abstraction in ways of organizing and manipulating data relative to time and prioritization. FIFO is used for buffering and flow control while data come from hardware to software. When using hardware FIFO (buffer), a little delay on software or operating system will not lost data at all.
The PCIe-S114i card is equipped with 256-byte hardware FIFO on each port. Large hardware FIFO is useful to prevent data lost when your system works under heavy load, e.g. while running on a multi-task operating system such as Windows and Linux.


  • Industrial Machinery
  • Building Automation
  • Restaurant Appliances
  • Laboratory Equipment & Research
  • Industrial Communication