Sealevel’s New Dual-Port Multi-Interface PCI Express Serial Adapter Offers Highest Data Rates

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Sealevel's best-selling dual-port multi-interface PCI Express serial adapter has been enhanced with the release of the 7205ec.


Sealevel's best-selling dual-port multi-interface PCI Express serial adapter has been enhanced with the release of the 7205ec. This new board features an ultra high-speed UART, flexible clock prescalar, and larger 256-byte Tx/Rx FIFOs that allow the adapter to support the widest range of standard and non-standard baud rates exceeding 1 Mbps. These improvements make the 7205ec ideal for data intensive applications that require reliable, ultra-fast throughput rates.

The electrical interface, echo suppression and line termination continue to be set via convenient on-board DIP switches. Optionally, these settings can now be overridden by the Windows device driver. Another addition to the Windows driver is the software-selectable Slew Rate Limiting feature that minimizes electromagnetic interference when the serial ports operate at baud rates below 250K bps. For rapid troubleshooting, on-board LEDs have been added to display the board heartbeat, confirm electrical interface selection and line termination state.

The 7205ec is a “form, fit and function replacement” for the 7205e; existing customers of the 7205e simply need to update to the latest 7205ec software driver to ensure their application will continue to operate as expected. The 7205ec is a PCI Express X1 board compatible with any low profile PCI Express slot. Low volume price is $259 and the board is available from stock.

Sealevel Systems, founded in 1986, provides industrial computing solutions in addition to a variety of communications and I/O products including PCI Express and PCI Bus cards, Ethernet serial servers, and USB serial adapters. The product line includes multi-port RS-232, RS-422/485, RS-232/422/485 multi-interface high-speed sync/async, and digital/relay I/O. For more information, visit or call 864-843-4343.

Product Features

  •     Two serial ports configurable for RS-232, RS-422 or RS-485 interface
  •     Electrical interface selection via on-board DIP switch with Windows device driver override
  •     Software selectable 250K Slew Rate Limiting to minimize electromagnetic interference
  •     Ultra high-speed UART with 256-byte Tx and Rx FIFOs
  •     Supports asynchronous data rates exceeding 1 Mbps
  •     Bus-derived 125 MHz BRG and clock prescalar support wide range of baud rates
  •     Automatic RS-485 enable/disable for Windows applications
  •     PCI Express X1 compliant
  •     Compatible with low profile PCI Express slots (standard profile slots with optional bracket)
  •     All modem control signals implemented in RS-232 mode
  •     Includes 36” cable that terminates to two DB9M connectors


Editor-only contact:
Earle Foster
SR. VP of Sales & Marketing

Reader contact information:

Sealevel Systems, Inc.
Liberty, South Carolina USA

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Van Miller
Sealevel Systems, Inc.
(864) 843-4343 x145
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