miniPCIe WWAN modem breakout board

Introducing the sysmocom miniPCIe WWAN modem breakout board

(Download the Data Sheet)

miniPCIe break-out board

The miniPCIe WWAN modem break-out board is a useful utility for evaluating any kind of cellular modem in the classic miniPCIe form-factor.

miniPCIe form-factor modems are pretty commonly found for all cellular technologies from CDMA and GSM/GPRS all the way through LTE. The transmission speed on this form-factor is limited to the 480 Mbps of USB 2.0 high-speed.

Key Features

The main features of the board can be described as follows:

  • on-board linear power regulator generating the 3.3V supply voltage for the miniPCIe modem

  • USB 2.0 high-speed signals exposed on USB 2.0 mini-B connector (miniB-A cable included)

  • 2FF (mini-SIM) slot for RUIM/CSIM/SIM/ USIM

  • all unused miniPCIe pins are exposed on a 2.54mm break-out header. This is useful for attaching to non-standard interfaces such as PCM audio busses of modems.

  • PERST and W_DISABLE can be configured via jumper

  • 3x on-board SMA sockets with U.FL next to them; U.FL to U.FL pigtail cables included. This provides proper strain relief of any antenna connections to the modem.

  • Power LED and Modem Status LED

miniPCIe board with included accessories


As the miniPCIe modem break-out board adheres to the miniPCIe mechanical form factor and standardized pin-out, it should work with any WWAN modem, irrespective of the supplier.

Open Source Hardware

The miniPCIe WWAN modem break-out board was created as an OSHW (Open Source Hardware) design.

This means not only schematics are available, but also the full design files including PCB layout. Anyone may create derivative works under the terms of the Creative Commons Attribution Share-Alike (CC-BY-SA) license.

For more information, see


The miniPCIe WWAN modem breakout board is available for direct purchase from the sysmocom webshop. For volume orders, please inquire at

Mechanical / Electrical specification

Dimensions of PCB

90 x 80 mm


M3 Mounting Holes for spacers/stands

SIM/UICC slots

2, ETSI/3GPP 2FF form factor

USB port

USB-micro-B (3.0)

Debug facilities

all unused miniPCIe signals exposed on 2.54mm pitch header


1x Power (gren), 1x Modem Status (yellow)

Input Voltage

5 V DC (typ) on 5.5/2.5mm barrel type


Block Diagram