Features and Benefits 

  • PCI Express x1 compliant
  • 921.6 kbps maximum baudrate for super fast data transmission
  • 128-byte FIFO and on-chip H/W, S/W flow control
  • Low profile form factor fits small-sized PCs
  • Drivers provided for a broad selection of operating systems, including the latest Windows and Linux


The CP-114EL and CP-114EL-I are smart, 4-port PCI Express boards designed for POS and ATM applications. The boards are a top choice of industrial automation engineers and system integrators, and support many different operating systems, including Windows and Linux. In addition, each of the boards’ 4 RS-232/422/485 serial ports supports a super fast 921.6 kbps baudrate. The CP-114EL and CP-114EL-I provide full modem control signals to ensure compatibility with a wide range of serial peripherals, and their PCI Express “x1” classification allows the boards to be installed in any PCI Express slot.

Smaller Form Factor

The CP-114EL and CP-114EL-I are low profile boards that are compatible with any PCI Express slot. The boards require only a 3.3 VDC power supply, which means that the boards fit any host computer, ranging from shoebox to standard-sized PCs.

Drivers Provided for Windows, Linux

Moxa continues to support a wide variety of operating systems, and the CP-114EL/EL-I boards are no exception. Reliable Windows COM and Linux TTY drivers are provided for all Moxa boards, and other operating systems, such as WEPOS, are also supported for embedded integration.

• Hardware
Comm. Controller16C550C compatible
BusPCI Express x1
ConnectorDB44 female
• Serial Interface
Number of Ports4
Serial StandardsRS-232/422/485
Max. No. of Boards per PC4
• Serial Line Protection
Electrical Isolation2 kV (CP-114EL-I only)
• Performance
Baudrate50 bps to 921.6 kbps
• Serial Communication Parameters
Data Bits5, 6, 7, 8
Stop Bits1, 1.5, 2
ParityNone, Even, Odd, Space, Mark
• Serial Signals
RS-422TxD+(B), TxD-(A), RxD+(B), RxD-(A), GND
RS-485-4wTxD+(B), TxD-(A), RxD+(B), RxD-(A), GND
RS-485-2wData+(B), Data-(A), GND
• Physical Characteristics
DimensionsCP-114EL: 67.21 x 103 mm (2.65 x 4.06 in)
CP-114EL-I: 67.21 x 135 mm (2.65 x 5.31 in)
• Driver Support
WindowsWindows 95/98/ME/NT/2000, Windows XP/2003/Vista/2008/7/8/8.1/10 (x86/x64), Windows 2008 R2/2012/2012 R2 (x64), DOS
LinuxLinux 2.4.x, 2.6.x, 3.x
Unix-like SystemsQNX 6, SCO OpenServer, UnixWare 7, Solaris 10
Note: Please refer to Moxa’s website for the latest driver support information.
• Environmental Limits
Operating Temperature0 to 55°C (32 to 131°F)
Storage Temperature-20 to 85°C (-4 to 185°F)
Ambient Relative Humidity5 to 95% (non-condensing)
• Standards and Certifications
EMCEN 55032/24
EMICISPR 32, FCC Part 15B Class B
EMSIEC 61000-4-2 ESD: Contact: 4 kV; Air: 8 kV
IEC 61000-4-3 RS: 80 MHz to 1 GHz: 3 V/m
IEC 61000-4-4 EFT: Power: 1 kV; Signal: 0.5 kV
IEC 61000-4-5 Surge: Power: 2 kV
IEC 61000-4-6 CS: 150 kHz to 80 MHz: 3 V/m; Signal: 3 V/m
IEC 61000-4-8 PFMF
IEC 61000
• MTBF (mean time between failures)
TimeCP-114EL: 2,347,197 hrs
CP-114EL-I: 603,671 hrs
StandardTelcordia (Bellcore) TR/SR
• Power Requirements
Input CurrentCP-114EL: 835 mA @ 3.3 VDC
CP-114EL-I: 1,170 mA @ 3.3 VDC
• Warranty
Warranty Period5 years
DetailsSee www.moxa.com/warranty

Available Models

Model No.Description
CP-114EL4-port RS-232/422/485 PCI Express x1 low profile serial board
CP-114EL-I4-port RS-232/422/485 PCI Express x1 low profile serial board with 2 KV optical isolation protection
CP-114EL-DB9M4-port RS-232/422/485 low profile PCI Express x1 serial board (includes DB9 male cable)
CP-114EL-DB25M4-port RS-232/422/485 low profile PCI Express x1 serial board (includes DB25 male cable)
CP-114EL-I-DB9M4-port RS-232/422/485 low profile PCI Express x1 serial board with optical isolation (includes DB9 male cable)
CP-114EL-I-DB25M4-port RS-232/422/485 low profile PCI Express x1 serial board with optical isolation (includes DB25 male cable)

Optional Accessories

 Other Accessories

Model No.Description
CBL-M44M25x4-50DB44(M) to 4 x DB25(M) Cable
CBL-M44M9x4-50DB44(M) to 4 x DB9(M) Cable