Features: Prevents powerbanks auto shutdown with adjustable 25-300mA current draw via 4 jumper selectable modes (25/50/75/150mA) for continuous charging of low power USB devices. Features USB A interfaces with removable jumper caps that enable customized current combinations to maintain power flows for various devices. for users of fitness trackers, wireless earbuds, USB rechargeable batteries, and other low current gadgets requiring uninterrupted charging. Ensures continuous power supply during extended charging for IoTs devices, smartwatches, and Bluetooth-compatible accessories that require stable current input. PCB builts module delivers universals compatibility with USB powered devices through precise current regulation (25-300mA ranges), preventing premature shutdown across various powerbanks. Specifications: Materials: PCB interfaces: USB male, USB female Size: 50x23mm Package Includes: 1PC USB Load Module note: Please allow 0-1cm error due to manual measurement. make sure you not mind before bid. Due to the differences between different monitors, the Pictures may not reflect the actual of the item.