Qtek S100 device Cables are multifunctional and can do many things. They can connect one phone to another. They can also charge your phone if one end is a USB port, Qtek S100 device can be plugged into your computer. This will also enable you to connect your Qtek S100 device to your computer enabling syncing and other related features for data transfer. Some USB cables have a dock connector on one end and a USB termination on the other. Still other types of cables will connect your Qtek S100 device to an audio or video device or a combination of the two. These can be connected via dock connector or headphone jack.