Enable your UP board into a IoT gateway. 

With this module, you can add mini-PCI-express 3G/4G module and wifi+bluetooth module.

UP-3GHAT rev 0.2，UP 3G HAT with SIM Slot，include USB Cable

ESP-12F installation module with ESP8266 favorite chip.

Wireless standards: 802.11 b / g / n
Frequency Response: 2.4GHz-2.5GHz (2400m-2483.5M)
Data Interface: UART / HSPI / I2C / 2S / Ir Remote Controller GPIO / PWM
Operating voltage: 3.0 ~ 3.6V (recommendation 3.3)
Operating current: Diameter: 80 mA