PCIe-COM-4SM(DB/RJ): PCI Express DB/RJ Multiprotocol Serial Card Family
Features
- Four and two-port PCI Express serial communication cards with on board DB9M or RJ45 connectivity
- Serial protocol (RS-232/422/485) SOFTWARE CONFIGURED per port, stored in EEPROM for auto-configure at next boot
- High performance 16C950 class UARTs with 128-byte FIFO for each transmit and receive buffer
- Supports data communication speeds up to 3Mbps (standard model RS-232 is 460.8kbps)
- ±15kV ESD protection on all signal pins
- Supports 9-bit data mode
- Full modem control signals in RS-232 mode
- Software compatible with all operating systems
- Selectable termination for RS-485 applications
- Designed, made, supported, and manufactured in the USA
FACTORY OPTIONS
- Extended temperature operation (-40° to +85°C)
- High-speed RS-232 version up to 921.6kbps
- RoHS compliant version
- Support for Wind River VxWorks (call for ordering information)
- Remote wake-up enable on COM A
Price range: $179.00 through $339.00
In StockDescription
PCI Express 4 and 2-Port RS-232/422/485 Serial Communication Cards
ACCES I/O’s PCI Express multi-port multi-protocol serial communication cards deliver four (PCIe-COM-4SMDB, PCIe-COM-4SMRJ) or two (PCIe-COM-2SMDB, PCIe-COM-2SMRJ), high-speed serial communication ports for use in a wide variety of applications. The cards were designed to offer serial compatibility with the PCI Express bus and to be used by system integrators and manufacturers in the design of industrial and commercial systems. Each COM port is capable of supporting data rates up to 3Mbps and implements full modem control signals in RS-232 mode to ensure compatibility with a broad variety of serial devices.
Perfect for existing serial peripherals to connect directly to the industry standard pin-out of the DB9M connectors or via a RJ45 connector. The card features a x1 lane PCI Express connector which can be used in any available x1, x2, x4, x8, x12, or x16 PCI Express expansion slot.
Available accessories include a broad range of cables, screw terminal boards and breakout connection boxes for a variety of quick and easy connectivity options.
SPECIAL ORDER
Please contact ACCES with your precise requirement. Examples of special orders would be conformal coating, custom software, etc., we will work with you to provide exactly what is required.
SOFTWARE
A complete driver support package is provided including an easy-to-use Windows terminal program for testing your COM ports. This simplifies the verification of proper COM port operation. The card installs as standard COM ports in all operating systems including DOS, Linux (including Mac OS X) and 32-bit and 64-bit Windows.
Modified-COTS (MCOTS) Customization
ACCES can tailor any standard product to your precise requirements — electrical, mechanical, firmware, environmental, or connector-level. Common MCOTS options include alternate I/O ranges, isolation enhancements, firmware changes, private labeling, conformal coating, extended temperature operation, ruggedized enclosures, and military-grade components. If this product is close but not a perfect fit, our engineering team can deliver a rapid-turn MCOTS variant with minimal NRE and dependable, Made-in-USA quality.
Downloads
Data Sheets
Manuals
Software
- PCIe-COM DB/RJ Family Software Package ( -- Last Uploaded 2025-05-07)
Drivers and Downloads
Full list of available Downloads: Software Packages, Drivers, Manuals, and other documents
Information about our Free Software packages:
ACCES is proud to provide a full suite of software support with every Data Acquisition product. We are committed to supporting the most popular operating systems and platforms for our customers. Currently we are actively supporting 7 -> 11, both 32 & 64 bit, including “Server 2008,” “Embedded,” and “Compact” flavors for all plug-and-play products including PCI, PCI Express, USB, and more. Many products continue to ship with support for additional operating systems such as DOS, Windows 95, 98, Me, NT4, 2000, and XP.
Samples
Among the software we deliver with our products are sample programs in a wide variety of programming languages. These samples are used to demonstrate the software interfaces to our products — and many can be used as-is in your production environments, or to test functionality of the devices out-of-the-box. We’re currently actively supporting sample programs in Microsoft Visual C#, and Delphi, with many devices including samples in Visual Basic (5 and .NET), Visual C/C++, and Borland C/C++ 3.1 for DOS. Additionally we provide National Instruments LabVIEW compatible DLLs and many demonstration VIs for our devices.
Drivers
Drivers for various operating systems are also provided, including active support for Windows 7 -> 11 — all in both 32-bit and 64-bit flavors, and including consumer, server, and embedded varieties — as well as the 2.6 and newer Linux kernels and recent OSX / macOS versions. Many products continue to ship with driver support for Windows 95, 98, Me, NT4, Windows 2000, XP, and more, but support for these operating systems is considered deprecated.
Setup Programs and Utilities
Our Data Acquisition devices also include a graphical setup utility that walks you through the process of configuring any option jumpers or switches on the device, as well as explaining a little about the various connectors present.
Many devices also include utility programs – little tools to make your use of the device easier, such as EWriter, a program that allows you to read and write data in the user-accessible EEPROM locations on all our USB data acquisition products; or WinRISC, a “Really Incredibly Simple Communications” terminal program that lets you get started instantly with serial devices.
“Register Level” Documentation
Besides all this software in all these languages and operating systems ACCES has a policy of open and transparent development: none of our lowest-level “register” interfaces are hidden from you — we document every register in every bus card, every command in every serial board, and every usb control transfer in every USB Data Acquisition board. These lowest-level interfaces allow you to develop for our products in ANY operating system or language, regardless of our actively supporting it or having a driver for it. We have customers actively developing in ADA, Android, Python, Java, MATLAB, Solaris, and more, just by referring to our complete low-level interface documentation! And we provide the full source code to all of our drivers, regardless of operating system, to give you an even bigger head start in your own development tasks.
No Fees or Royalties
All of this software is provided at no additional charge, and is licensed under any of a variety of flexible — and royalty free — options. Check out our software license explanation if you’d like more information.
AIOSerial/VxWorks
ACCES has successfully partnered with Wind River to bring our entire line of PCI and PCI Express Serial Communication cards to VxWorks 7! All ACCES plug-and-play serial cards are now supported with our VxWorks driver, including RS232, RS422, RS485 (2- and 4-wire) and baud rates up to 10Mbps.
Designed as an update to the existing vxbPciNs16550Sio.c driver, we’ve added support for ×8 baud rates, proper handling of the unique register location of the 4th port in the Pericom PI7C9X7954 UART, and configuring the serial protocol from your application software.
With this driver suite all ACCES PCI, PCI Express, PCI Express Mini Card, M.2, PCI-104, PCIe/104, and all related “PCI Style” plug-and-play serial cards will detect and install as standard VxWorks SIO ports.
Asynchronous Communications Interface
- I/O connection: DB9 or RJ45
- Serial ports: 4 (or 2) RS-232/422/485
- Serial data rates: RS-232=460.8k (921.6k avail); RS-422/485=3Mbps
- UART: Quad type 16C950 with 128-byte transmit & receive FIFO, 16C550 compliant
- ESD Protection: ±15kV on all signal pins
- Character length: 5, 6, 7, 8, or 9 bits
- Parity: Even, Odd, None, Space, Mark
- Stop interval: 1, 1.5, or 2 bits
- Flow Control: RTS/CTS and/or DSR/DTR, Xon/Xoff
Environmental
- Operating temperature:
Commercial: 0°C to +70°C
Industrial: -40°C to +85°C - Storage temperature: -65°C to +150°C
- Humidity: 5% to 95%, non-condensing
- Power required: +3.3VDC @ 0.8W (typical)
- Size: 4.722″ long x 3.375″ high (120 mm long x 85.725 mm high)
| Model | Description | Price (USD) | |
|---|---|---|---|
| PCIe-COM232-2DB | PCIe 2 Port RS-232 DB9M Serial Card | $179.00 | |
| PCIe-COM232-4DB | PCIe Four Port RS-232 DB9M Serial Card | $259.00 | |
| PCIe-COM232-2RJ | PCIe Two Port RS-232 RJ45 Serial Card | $189.00 | |
| PCIe-COM232-4RJ | PCIe Four Port RS-232 RJ45 Serial Card | $269.00 | |
| PCIe-COM-2SDB | PCIe Two Port RS-422/485 DB9M Serial Card | $229.00 | |
| PCIe-COM-2SRJ | PCIe Two Port RS-422/485 RJ45 Serial Card | $239.00 | |
| PCIe-COM-4SDB | PCIe Four Port RS-422/485 DB9M Serial Card | $299.00 | |
| PCIe-COM-4SRJ | PCIe Four Port RS-485 RJ45 Serial Card | $309.00 | |
| PCIe-COM-2SMDB | PCIe Two Port RS-422/485 DB9M Serial Card | $259.00 | |
| PCIe-COM-2SMRJ | PCIe Two Port RS-422/485 RJ45 Serial Card | $239.00 | |
| PCIe-COM-4SMDB | PCIe Four Port RS-232/422/485 DB9M Serial Card | $329.00 | |
| PCIe-COM-4SMRJ | PCIe Four Port RS-232/422/485 RJ45 Serial Card | $339.00 |
| Accessories | |
|---|---|
| ADAP9 | Screw terminal adaptor (single DB9 female to 9 screw terminals) |
| ADAP9-2 | Screw terminal adaptor (dual DB9 female to 18 screw terminals) |
| Model Options: | |
| -F | Fast version (RS-232 up to 921.6kbps) |
| -T | Extended Temperature Operation (-40° to +85°C) |
| -RoHS | RoHS compliant version |
| -W | Remote wake-up enable |
| * Please note: 4-port “DB” equipped cards require a (provided) cable-to-second-backplate accessory. | |