based USB to TTL Serial Cable are designed using the the standard FT232RL chipset. The cables provide 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 provide 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 selection of different connectors supporting applications . Cables are available with either a 6-way ,0.1inch pitch connector, a 3.5mmAudio Jack, an 8 way, keyed 2mmpitch connector (intended for use with VMUSIC2 or VDRIVE2) or bare, 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: 4 x 6Pin FT232RL FT232 Module Only the above package content, other products are not included. Note: Light reflection 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.