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laforge, 11/25/2016 02:02 PM

mPCIe WWAN modem USB breakout board

This is a small break-out board for miniPCIe (mPCIe) type cellular / WWAN modems.

It allows you to insert a mPCIe modem from any vendor, and it will provide you with:

  • mini USB socket for connection to a USB Host (like your PC/Laptop or Embedded System)
  • 5V DC input for power supply (USB supply usually insufficient for a modem)
  • all unused mPCIe pins on a 2.54mm break-out header
  • SIM card slot for a 2FF-sized SIM, USIM or RUIM card

Particularly the break-out header is useful to get access to various signals exported in a non-standard fashion by some modem models, such as digital audio PCM.


Layout / Component Placement

Where to buy

If you would like to buy a fully-assembled version of this board, you can order it from

SANY1649.jpg (173 KB) laforge, 11/25/2016 02:02 PM

mpcie-breakout.pdf - Schematics (32.9 KB) laforge, 11/25/2016 02:03 PM

mpcie-breakout_brd.pdf - Component Placement (19.8 KB) laforge, 11/25/2016 02:03 PM

SANY1650.jpg (171 KB) laforge, 11/25/2016 02:08 PM

mpcie-breakout.png (201 KB) laforge, 11/25/2016 09:05 PM

mpcie-breakout-v3-top.small.jpg - v3 top view (531 KB) laforge, 05/24/2017 12:52 AM

mpcie-breakout-v3-perspective.small.jpg - v3 perspective view (520 KB) laforge, 05/24/2017 12:52 AM

mpcie-breakout-v3-kit.small.jpg - v3 kit view (401 KB) laforge, 05/24/2017 12:52 AM