This cable is connect PC/Laptop (usb side) to for Skywater - mount auto Guide Specially, other device may not support. USB RJ12 cable for - Theodolite control PC directly connected to EQMOD cable. please double check your device before buy it . Build in Chip inside .Support all version Win7/8/10/XP/, and iOS/Linux/Android. USB to RJ12/6P6C interface cable for Replace the hand control box cable, just one cable connect the - mount . USB connect the - eqmod cable . support: 10 8.1 8.1 x64 8 8 x64 Server201 2 Server 2008 R2 7 7 x64 Server 2008 Server 2008 x64 Vista Vista x64 XP XP x64 ME 98 Linux OS 9 OS 8 CE.NET (Version 4.2 and greater) Android RT Note: If your can not download the drivers automatically, you may need to download and install a driver. Besides, As the feedback from our customer , some customers do not know how to install the driver for OS. advantage from this cable: 1.There are several reasons one would want to control their telescope with a PC: 2.It is faster than using the hand controller. 3.It gives you a visual aid when searching for something . 4.If you find something unknown, the planetarium software be to identify it. 5.It is a necessity if you plan on imaging anything for longer than a single quick exposure. It's cool. Colour: black Material: PVC+Metal Size: Length: about 1.8M Package Contents: 4 x EQMOD Cable 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 fr the real thing. The measurement allowed error is +/- 1-3cm.