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Diamond Point International

Contec COM-4C-LPE - 4 Port RS-232 Serial Low Profile PCI Express

Adds 4 RS-232 Ports to a PC via Low Profile PCI Express Slot


Contec's COM-4C-LPE is a PCI Express bus-supported board designed for extending RS-232C compatible serial communication functionality on your PC.

The COM-4C-LPE has four RS-232C communication ports. With a 128byte built-in FIFO buffer for transmission and reception of each channel, the product supports a baud rate of up to 921,600bps. It also comes with a Windows/Linux driver, which allows boards to be used as OS-standard COM ports.This product supports CONTEC-defined driver library “API-PAC(W32)” that provide local routines.

  • It supports high-speed communication of best 921,600bps. It can build more boards to 16 pieces at the maximum, and Setting COM1 - COM256 is possible.
  • It can be used it as a normal COM port of Windows or Linux by an attached driver software.
  • It supports to a Low Profile size slot, or a standard size slot (Can change it with an attached bracket).
  • A channel is equipped with serial port 1 of RS-232C conformity.
  • It is equipped with an FIFO buffer of transmission of a message 128byte reception 128byte.
  • Uses standard DB9 connectors )via cable) It can set a baudrate of channel by software.



Interface4 ports
Fixed RS-232 protocol
I/O Addresses: Assigned by Plug and Play resources
UART: 162850 or equivalent - 128-byte receive and 128-byte transmit FIFO buffers
Data RatesRS-232: 2 bps to 921.6 Kbps
Address/IRQAssigned by Plug and Play resources
OtherData length: 5, 6, 7 or 8 data bits. 1, 1.5 or 2 stop bits
Parity check: Even, Odd or Non-parity
Connecting distance: 15m (typical, depends on baud rate used)
Connector(s)44-pin D-SUB, female connector 103A-44FGTBBB3 (mfd. by COXOC) equivalent
44-pin to quad DB9 cable option


ExpansionPCI Express Base Specification Rev. 1.0a x 1
Electrical+3.3V DC @ 500mA (max)
Mechanical121.69(L)×67.90(H) mm
Comes with low profile bracket fitted and standard height bracket in box
SoftwareWindows 7, Vista, XP, Server 2003, 2000
TemperatureTemperature range (operation): 0 C to 50°C
Humidity10 - 90% RH (No condensation)
Warranty1 Year

Ordering Details

COM-4C-LPE 4 Port RS-232 Serial Low Profile PCI Express
PCE44/9P4S Divider Shield cable, D-SUB44pin -> 9pin x4 (0.25m) for Serial I/O Board