This cable is PC or 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 or 8 or 10 or XP or , and iOS or Linux or Android.USB to RJ12 or 6P6C interface cable for Replace the hand control box cable, just one cable the - mount .USB the - eqmod cable .Operating system support:Windows 10 Windows8.1 Windows 8.1 x64Windows 8 Windows 8 x64Windows Server201 2Windows Server 2008 Windows 7 Windows 7 x64Windows Server 2008 Windows Server 2008 x64Windows Vista Windows Vista x64Windows Server 2003 Windows Server 2003 x64Windows XP Windows XP x64Windows MEWindows 98 Linux OS 9 OS 8Windows .NET (Version 4.2 and greater) Android Windows RTNote: If your operating system can not download the drivers automatically, you may need to download and install a driver from http: or or .ftdichip. or 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: or or .ftdichip. or Support or Documents or 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:blackMaterial:PVCandMetalSize:Length: about 1.8MPackage Contents:1 x EQMOD CableOnly 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. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.