Features: Brand new and high quality This is an industrial expansion module for RPi Compute Module 4 Lite/eMMC series module, with UPS module. It features common interfaces such as USB and GPIO, allowing additional 4G/5G wireless communication modules to be connected via the M.2 or Mini PCIe socket. There are also industrial interfaces/resources such as RS485, CAN Combined with the industrial rail mount protective enclosure, the module is a choice for building IoT gateways, 4G/5G router, IoT data acquisition or even the device in the industrial automatic control system and more. It is able to charge the batteries while providing power from external power supply. Automatically switches to the battery output when no external power supply is available, keeps system running smoothly. It is suitable for Internet of Things gateways, 4G/5G routers, Internet of Things data collections and monitoring, industrial or other industrial applications. With UPS module to keep system running after disconnecting the power cord. Specifications: Material:Plastic UPS Power: UPS Module, 5V/2.5A Output, supports 3x 10440 batteries (not included) USB: USB 2.0x3 Pin header: 2x non-insulated RS485, 1x non insulated CAN, partial GPIO pins Fan head: 5V/12V, allows speed adjustment and measurement Power consumption: 5V or 7-36V Size:Approx. 145x90x40mm/5.7x3.54x1.57inch Note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1 Set Expansion Board