ITEM NAME:3.3V 5.5V FT232RL USB to TTL Serial Adapter Module for Arduino Mini Port Description: - Support 3.3V, 5V, chipset FT232RL - USB power has over current protection, USB power using 500MA fuse (FUSE) to protect USB power and equipment - RXD/TXD transceiver communication indicator - Pin definition: DTR RX TX VCC CTS GND - The latest driver download address: https://pan.baidu.com/s/1c0COdNy Specification: - Material: PUC sheet - Size: 42*10*18mm/1.65*0.39*0.71'' Package Included: 1x USB to TTL Serial Adapter Module.1x USB to TTL Serial Adapter Module. - RXD/TXD transceiver communication indicator. - Size: 42 10 18mm/1.65 0.39 0.71".