M.2 (NGFF) WWAN modem USB breakout board¶

• Table of contents
• M.2 (NGFF) WWAN modem USB breakout board
  • Design Files, Schematics, Component Placement
  • Where to buy

This is a small break-out board for M.2 (NGFF) type cellular / WWAN modems.

It allows you to insert a M.2 modem from any vendor, and it will provide you with:

• microUSB-B (3.0) 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 current peaks of a modem)
• all unused m.2 pins on a 2.54mm break-out header
• 2x SIM card slot for a 2FF-sized SIM, USIM or RUIM cards (dual-SIM)
• socket for the PCIe lane on the m.2 connector; allows you to connect the board to a PCIe bus/port of a computer by means of a PCIe slot adapter (not included)

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.

Design Files, Schematics, Component Placement¶

The design files can be found in the ngff-breakout directory of the osmo-small-hardware git repository. See http://git.osmocom.org/osmo-small-hardware/tree/ngff-breakout

Where to buy¶

The general idea of Open Hardware projects is that anyone is allowed to build the design. So feel free to take the design files and build it yourself, either modified or unmodified. Please make sure you always

• attribute the original author (Attribution)
• release any changes to the design files under the same terms (Share Alike)

If you would like to buy a fully-assembled version of this board, you will be able to order it (once we have validated the design) from the sysmocom webshop