DescriptionThis item is a USB to TTL serial adapter module, which support 3.3V, 5.5V and adopts chipset FT232RL. USB power has over current protection, using 500MA self-restore fuse, and RXD/TXD transceiver communication indicator. Besides, it is a nice USB to TTL module for choice.Features- Module size:36 *17.5mm.- Interface: Mini USB.- Support 3.3V, 5.5V.- Chipset FT232RL.-FT232RL FTDI USB to TTL Serial Adapter Module.- USB power has over current protection, using 500MA self-restore fuse.- RXD/TXD transceiver communication indicator.- Pin definition: DTR,RXD,TX,VCC,CTS,GND.- Pitch:2.54mm.