Features: new and high quality USB 2.0 full speed compatible, Standard HID-Class Devices-No Custom Driver Required, 8 GPIO with configurable option.All customization and configuration option can be selected through a simple GUI-based configurator. Since there is no need to develop complex firmware, CP2112 devices can achieve USB connection with minimal development work. Integrated USB transceiver; No external resistor required, Integrated clock; No need for external crystals. No firmware development required,Simple GUI-based configurator. Suitable for USB dongle, instrument,controller, point-of-sale product. Specifications: Material|:PCB USB bus power supply: 4.0-5.25V Self-powered: 3.0-3.6V Input/output voltage: 1.8V-VDD Working environment temperature:-40C-85C Size:Approx.29.5x21.3mm/1.16x0.83inches 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: 1x Communication Module