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Item#: N82E16839158047

StarTech EC1S1P55254 1S1P 54mm ExpressCard Serial Parallel Combo Card with 16550 UART

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  • High performance single-chip design optimizes speed, reliability, and power,reducing CPU load by up to 48% over conventional adapters
  • Perfect fit for business laptops and ensures a long life

  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews

The EC1S1P55254 1S1P 54mm Parallel/Serial ExpressCard (16550 UART) adds 1 RS232 serial, and 1 IEEE 1284 Parallel port to your laptop, using an available 54mm ExpressCard slot.

This high-performance Serial/Parallel adapter with included breakout cable uses the full 54mm form factor for a perfect fit and long life durability. Supporting RS232 speeds up to 128Kbps and parallel rates up to 1.5Mbps, the serial/parallel adapter features a native chipset that delivers reliability, performance, and lower CPU loads versus conventional bridge-chip cards.

Designed for use with laptop computers equipped with 54mm ExpressCard slots, this 1S-1P card offers a broad operating system compatibility list that includes Windows, Mac OS X and Linux, for simple integration into almost any system. The adapter also functions as a single port Parallel adapter if used without the included breakout cable.

  • newegg Single-chip Design This Parallel/Serial ExpressCard features a high performance single-chip design that optimizes speed, reliability, and power, while reducing CPU load by as much as 48% over conventional adapters that use a 'bridge-chip'. Supports baud rates up to 128Kbps and parallel rates up to 1.5Mbps.
  • newegg 54mm ExpressCard Full width 54mm ExpressCard is a perfect fit for business laptops and ensures a long life without damage to the card, or your notebook. It supports PCIe Power Management, and is fully compliant with PCI Express Base Specification Revision 1.0a.
  • newegg Breakout Cable Included The included breakout cable spreads out the 2 ports, to avoid crowded connections.

Learn more about the STARTECH EC1S1P55254




Serial + Paralle Ports ExpressCard
Data Rates
Parallel data rates up to 1.5Mbps
Other Ports
DB-25 (25 pin D-Sub) Female
DB-9 (9 pin D-Sub) Male
0.70" x 2.10" x 4.50" (H x W x L)
Operating Systems Supported
Windows® 8 / 8.1 (32/64bit), 7 (32/64), Vista (32/64), XP (32/64), 2000
Windows Server® 2012, 2008 R2, 2003
Mac OS® 10.4 and up (Tested up to 10.9)
Linux 2.6.x


1x 16C450/550 compatible UART serial port, and 1x IEEE 1284 Parallel port

Supports baud rates up to 128000bps

256 Byte deep transmit/receive FIFO

Breakout cable included

Fully compliant with PCI Express Base Specification Revision 1.0a

Supports PCIe Power Management

Chipset ID: Moschip MS9922CV-AA
Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 0 day
  • Read full details
  • Return Policies
    • Return for refund within: 30 days
    • Return for replacement within: 30 days
  • This item is covered by's Standard Return Policy.
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