Features: 1.50bps to 2Mbps: Hardware full duplex serial port, built in transceiver buffer, support communication baud rate 50bps to 2Mbps. 2.Level Selection: USB to TTL Serial cable with 5V and 3.3V level selection, suitable for different level occasion. 3.3 Color Indicators: USB to TTL cable with three color indicators, power indicator (red lamp), TX indicator (green lamp), RX indicator (blue lamp) for understanding the working status. 4.ABS Material: Using the original chip, there will be no incompatibility problems caused by different drivers or different computers, etc. ABS material, to ensure stability. 5.Compatibility: The serial port application under for Windows OS on the computer side is fully compatible, no need to modify. specification:Item Type: USB to TTL Serial Cable Material: ABS Cable Length: 1.5meters/4.9ft Interface Type: Red 5V, Yellow VCC, Blue 3.3V, White TXD, Green RXD, Black GND Application: Satellite Set Top Box, Router, Hard Disk, ADSL, Broadband Cat Firmware Upgrade or Crack Upgrade, Cell Phones, GPS Serial Communications, Car Testing, DVD Brushing, Etc. Burning STC Microcontrollers, NXP Microcontrollers, Renesas Microcontrollers, NEC Microcontrollers, etc., Simple Serial Communications, Serial Debugging Tools Commonly Used in Terminals, Electronic Enthusiasts Can Use USB Signal to TTL Signal PackageList:1 x USBtoTTLSerialCable