7406e - 4 Port RS-232 Low Profile PCI Express Asynchronous Serial Card with DB25 cable (COMM+4/232.PCIe)
CE is a mandatory standard for products on the market in the European Economic Area. By CE marking a product, the manufacturer ensures that the item meets the essential safety requirements set out in the applicable CE directive.
This product fully adheres to the Restriction of Hazardous Substances Directive 2002/95/EC, RoHS for short.  The directive covers the restriction of use of certain hazardous substances in electrical and electronic equipment and was adopted in February 2003 by the European Union.
This product has a lifetime warranty against product failure (excludes user or enviromental damage).
The Federal Communications Commission (FCC) is an independent agency of the United States government that sets standards and governs the testing of conducted and radiated emissions such as EMI.
7406e PCI Express Asynchronous Serial Card
7406eS7406e side7406e top
4 7406e versions available
Free delivery to UK mainland addresses

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Version information
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7406e with DB25 4 port cable and low profile height bracket
7406e with DB9 4 port cable and low profile height bracket
7406e with DB25 4 port cable and standard height bracket
7406e with DB9 4 port cable and standard height bracket
Peripheral information
Lead time*
1 off price**
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DB25 Female to DB25 Male Extension Cable, 72" in Length
DB25 Female to DB9 Male - RS-232 Converter
Terminal Block Kit - TB04 + CA104 Cable
Terminal Block - DB25 Female to 25 Screw Terminals
DB25 Female to RJ45 Modular Adapter
All prices exclude VAT at current rate.
Minimum order value - £50 (exc. VAT and delivery).
Free delivery of the 7406e to UK Mainland on orders over £50 (exc. VAT and delivery) when purchasing online - excludes Northern Ireland, Isle of Man, Isle of Wight, Scottish Islands and the Channel Islands.

* Lead time is indicative and is subject to change at time of ordering. Next business day delivery on in-stock products only (when ordered before 3pm).
** Contact us for quantity or project pricing.
† Additional delivery charge may be incurred for certain postcodes (calculated at checkout)

7406e overview

  • Four RS-232 ports
  • 16C954 buffered UARTs with 128-byte FIFOs
  • Oscillator and clock prescalar support wide range of baud rates
  • Supports 9-bit protocol framing
  • Each port supports data rates to 921.6 Kbps
  • PCI Express X1 compliant
  • Compatible with all low profile PCI Express slots
  • All modem control signals implemented
  • Included 36" cable terminates to four DB25M connectors (Item# CA199)
The 7406e low profile PCI Express serial interface provides four RS-232 serial ports. For maximum compatibility with a wide range of peripherals, the board supports all standard RS-232 modem control signals. The serial ports utilize a 16C954 UART with 128-byte Tx/Rx FIFOs that enables data rates to 921.6 Kbps for reliable high-speed communications in data intensive applications.

This high-performance UART includes 9-bit framing support and is fully software compatible with legacy 16550 applications. In addition, the board derives a 62.5 MHz clock from the PCI Express link. This ultra-high speed clock is divided by a flexible 8-bit clock prescalar with 1/8 steps to provide support for the widest range of standard and non-standard baud rates.

The Sealevel SeaCOM software driver and utilities make installation and operation easy using Microsoft Windows and Linux operating systems.

The 7406e is a PCI Express X1 board compatible with any low profile PCI Express slot. If you have a standard height PCI Express slot, please order the 7406eS. Both versions include a 36" cable that terminates to four DB25M connectors. If you require a DB9 cable version please see the 7406e-DB9.

For more information about the 7406e please contact our technical sales team on +44(0)1782 337800 or alternatively submit an enquiry.
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T: +44 (0)1782 337 800 • E: SALES@IMPULSE-EMBEDDED.CO.UK
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