PCIe-S114 & PCIe-S114i – PCI Express, 4-Port RS-232 Communication Board
New Products
2023-12-15

Introduction
PCIe-S114/114i communication card provides 4 RS-232 serial ports. Each port is equipped with a 256-byte hardware FIFO, and enabling communication speeds up to 921600 bps. The PCIe-S114/114i card supports automatic COM port allocation by drivers.
The data lines of each serial ports on i version PCIe cards come 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 (for i version PCIe-S114i) divert potentially damaging charges away from sensitive circuit to protects the computer and equipment from the sudden and momentary electric currents.
The serial communication cards are 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.

PCIe-S114/114i 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, Linux… etc.
Features
The data lines of each serial ports on i version PCIe cards come 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 (for i version PCIe-S114i) divert potentially damaging charges away from sensitive circuit to protects the computer and equipment from the sudden and momentary electric currents.
The serial communication cards are 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.

PCIe-S114/114i 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, Linux… etc.
Features
- Supports PCI Express x1
- Provides 4 RS-232 ports
- 256-byte hardware FIFO for each port
- Transmission Speed up to 921600 bps
- Short Card Design
- Automatic COM port allocation
- Support Windows XP/2003/2008//7/8/10 32-/64-bit and Linux Kernel 2.6.31 to 5.16.0
Model Name | PCIe-S114 | PCIe-S114i |
---|---|---|
Bus Type | PCI Express x1 | |
Ports | 4 x RS-232 (TxD, RxD, RTS, CTS, DTR, DSR, DCD, RI, GND) | |
Baud Rate | 300 to 921600 bps | |
Data Bit | 5, 6, 7, 8 | |
Stop Bit | 1, 1.5, 2 | |
Parity | None, Even, Odd, Mark, Space | |
FIFO | Internal 256 bytes | |
Isolation | - | 3000 VDC |
For more information, please visit the following website:
PCIe-S114: https://www.icpdas.com/en/product/PCIe-S114
PCIe-S114i: https://www.icpdas.com/en/product/PCIe-S114i