SparkFun MicroMod Update Tool (DEV-17725) is built to interface with the MicroMod Asset Tracker Carrier Board (DEV-17272) and to communicate with the SARA-R5 module. This update tool includes a CH340C USB-serial converter that provides full access to all eight pins of SARA-R5’s UART interface via the asset tracker’s USB-C connector. The DEV-17725 features eight pairs of plated through-hole connections for the UART by using 3.3V signals.