based USB to TTL Serial Cable are designed using the the standard FT232RL chipset. The cables a fast, simple way to connect devices with a TTL level serial interface to USB. The cables are available with a 6-way , 0.1inch connector TTL levels is 3.3V The TTL-232R cables are a family of USB to TTL serial UART converter cables incorporating FTD's FT232RQ USB to Serial UART interface IC device which handles all the USB signalling and protocols. The cables a fast, simple way to connect devices with a TTL level serial interface to USB Each TTL-232R cable contains a small internal electronic circuit board, utilising the FT232R, which is encapsulated into the USB connector end of the cable. The other end of the cable comes with a of different supporting various applications . Cables are available with either a 6-way ,0.1inch pitch connector, a 3.5mmAudio , an 8 way, keyed 2mmpitch connector (intended for use with VMUSIC2 or VDRIVE2) or , tinned wire ended connections The USB side of the cable is USB powered and USB 2.0 full speed compatible. Each cable is 1.0m long and supports a data transfer rate up to 3 Mbaud Red wire: 5V Black wire: GND White wire: RXD Green wire: TXD Yellow wire: Blue wire: Colour:black Material:plastic Package Contents: 1* 6Pin FT232RL FT232 Module Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.