ACCES I/O Products supports critical infrastructure as defined by the US Department of Homeland Security and will be open during normal business hours 6 AM to 6 PM to serve our customers.
We are here to support you.

104e-mPCIe-4 and 104e-mPCIe-2

PCI Express Mini Card (mPCIe) Carrier Board (4x4) for 104-Express


  • Converts four PCIe x1 lane from stack into four PCI Express Mini Card sockets
  • Supports half- or full-size mPCIe cards, for use in a Type 1 or Type 2 PCIe/104 stack
  • All four sockets support USB, SMBUS, micro-SIM, as well as PCI Express signals
  • mSATA devices supported on two sockets (Type 2)
  • Powered from the PCIe/104 stack +5V rail, no 12V needed
  • 2mm standoffs integrated into design for easy installation, hardware included
  • RoHS and industrial temp (-40°C to 85°C) standard
  • Designed, made, supported, and manufactured in the USA


  • Top stacking (-TOP) (designed for use on top of stack)
  • One Bank connector (-1B)

The 104e-mPCIe-4 is a Type 1 or Type 2 PCIe/104 carrier board designed to support up to four PCI Express mini cards, in either half or full lengths. In addition the board supports up to two mSATA devices (via dip-switch selection on Type 2 PCIe/104 stacks only), and all four sockets support USB, SMBus, and wireless mPCIe devices — including micro-SIM sockets, per socket, for cellular (WAN) use.

The carrier board is a great way to use ACCES’ full industrial line of mPCIe products. These include isolated DAQ, serial, analog, digital I/O (TTL, LVTTL, relay, FET) and quadrature cards.

Having four peripheral device sockets on one PCIe/104 stack-height card truly multiplies the flexibility of your embedded designs without compromising size or ruggedness.

Special Order

Please contact ACCES with your precise requirement. Examples of special orders would be conformal coating, custom configurations or product labeling, and more. We will work with you to provide exactly what is required i.e. "MCOTS".

Accessories and Connections

Available accessories include our entire mPCIe product line as well as various mounting hardware.

mPCIe-HDW-KIT2Two 2mm nylon screws
mPCIe-HDW-PEM2Two 2mm standoffs for mounting half-length mPCIe cards and two 2mm nylon screws. One mPCIe-HDW-PEM2 kit needed per slot being converted to half-length.

Available Reference Manuals

Available Datasheets

Drivers and Downloads

Full list of available Downloads: Software Packages, Drivers, Manuals, and other documents

Custom Software

ACCES also offers Custom Software Services for our products. Our prices are unbelievably low, often as inexpensive as free! If you need something tweaked to support your needs, or an entire enterprise application developed from scratch, it is definitely worth your time to inquire with us, first.

Further information about available ACCES Software:

Redistributing Windows Drivers
A list of ACCES drivers and the files that compose them under different versions of Windows, so you can easily redistribute ACCES cards and drivers.

PC Interface

  • PC Interface: PCIe/104 Type 1 or Type 2
  • I/O Interface: PCI Express Mini Card Sockets (x4 or x2) (each with PCIe, USB, SMBus, Micro-SIM socket). mSATA (x2) on Type 2 PCIe/104 only


  • Temperature
    • Operating: -40°C to +85°C
    • Storage: -40°C to +85°C
  • Humidity: 5% to 95%, non-condensing
  • Power required: +5VDC @ 60mA typical (no load) (supplied by PCIe/104 stack)


  • Weight: 52.0 grams
  • Size: PCIe/104 Compliant
    • Length: 3.55"
    • Width: 3.775"

    Regulatory Compliance

    • This product is designed to be in full compliance with CE requirements.

    OEM and volume pricing available, please call us.

    ModelPrice (USD)

    mPCIe-HDW-KIT22mm mounting hardware
    mPCIe-HDW-PEM2Two 2mm standoffs for mounting half-length mPCIe cards and two 2mm nylon screws. One mPCIe-HDW-PEM2 kit needed per slot being converted to half-length.
    Model Options (call for pricing)
    -TOPboard configured for use on the top of the PCIe/104 stack
    -1BPCIe/104 "One Bank" Connector
    Acquisition, Control, Communication: Engineering and Systems