PCI Express/104 and PCI/104 mezzanine modules for embedded computing uses introduced by Acromag

Modules provide two mezzanine module sites to host AcroPack or PCI Express mini cards for data acquisition, test, simulation, and communications.
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Nov. 25, 2025
2 min read
The Acromag model APX4020 carrier cards integrate AcroPack I/O mezzanine modules into PC/104 computing systems for defense, aerospace, and industrial applications that require size, weight, and power (SWaP) optimization.

Summary points:

  • Supports integration of AcroPack or mini-PCIe modules into PC/104 computing systems for defense, aerospace, and industrial SWaP-critical applications, with PCIe/104 and PCI/104-Express formats available.
  • Enables simplified, rugged, high-performance modular I/O—analog/discrete, serial, avionics, and FPGA—while eliminating internal cabling through dual 50-pin connectors and a secure down-facing 100-pin connector design.
  • Provides versatile software support (Linux, Windows, VxWorks) and more than 25 available I/O functions, plus optional conduction cooling for reliable operation in challenging environments.

WIXOM, Mich. – Acromag Inc. in Wixom, Mich., is introducing the model APX4020 carrier cards to integrate AcroPack I/O embedded computing mezzanine modules into PC/104 computing systems for defense, aerospace, and industrial applications that require size, weight, and power (SWaP) optimization.

Available in PCI Express/104 and PCI/104-Express formats, both versions provide two mezzanine module sites to host AcroPack or full-size PCI Express mini cards. Common applications include data acquisition and control, test and measurement, simulation, and communication operations.

AcroPack modules offer signal processing including analog and discrete I/O, serial communication, avionics, and field-programmable gate array (FPGA) computing. Dual 50-pin connectors simplify the I/O interface between the modules and field signals without loose internal wires.

Mini PCI Express

AcroPack mezzanine modules improve on the mini PCI Express architecture by adding a down-facing 100-pin connector that securely routes the I/O through a carrier card to its integrated external connectors, thus eliminating internal cables and metalwork modifications.

An integrated conduction-cooling ring mates to an optional heat sink for use at temperatures. More than 25 I/O functions are available. Software tools support embedded applications running on Linux, Windows, or VxWorks operating systems.

For more information contact Acromag online at www.acromag.com.

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