This cable is PC/Laptop (usb side) to for Skywater - mount auto Specially, other device may not support. USB RJ12 cable for Skywatcher - Theodolite Free hand control PC directly connected to EQMOD cable. please double check your device before buy it . Build in Chip inside .Support all windows 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 the - mount . USB the - eqmod cable . Operating system support: Windows 10 Windows 8.1 Windows 8.1 x64 Windows 8 Windows 8 x64 Windows Server201 2 Windows Server 2008 Windows 7 Windows 7 x64 Windows Server 2008 Windows Server 2008 x64 Windows Vista Windows Vista x64 Windows Server 2003 Windows Server 2003 x64 Windows XP Windows XP x64 Windows ME Windows 98 Linux OS 9 OS 8 Windows .NET (Version 4.2 and greater) Android Windows RT Note: If your operating system can not download the drivers automatically, you may need to download and install a driver from http://.ftdichip./FTDrivers.htm. Besides, As the feedback from our customer , some customers do not know how to install the driver for OS. Please see the installation as following links: https://.ftdichip./Support/Documents/InstallGuides.htm advantage from this cable: 1.There are 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 aid when searching for something . 4.If you find something unknown, the planetarium software will be able to identify it. 5.It is a necessity if you plan on imaging anything for than a single quick exposure. It's cool. Colour:black Material:PVC+Metal Size:Length: about 1.8M Package Contents: 1 x EQMOD Cable Only the above package content, other products are not included. Note: Light reflection and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.