This 4-wire cable is a little over 100mm / 4" long and fitted with JST-SH female 4-pin connectors on both ends. Compared with the chunkier JST-PH these are 1mm pitch instead of 2mm, but still have a nice latching feel, while being easy to insert and remove. This cable can be used with Qwiic boards, to easily connect sensors and drivers from one board to the other. The cables are made symmetrically so don't worry about which side goes where! When used with Qwiic the colors are: Red - 3.3VDC Power Black - Ground Blue - I2C SDA Data Yellow - I2C SCL Clock