This cable is connect PC or 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 buy it . 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 connect the - mount . USB connect the - eqmod cable . support: 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 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 customer , some customers do not know how to install the driver for OS. Please see the installation guide as following links: https: or or .ftdichip. or Support or Documents or InstallGuides.htm advantage from this cable: 1.There are reasons one would to control their telescope with a PC: 2.It is 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 will be 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:PVCandMetal Size:Length: about 5M Package Contents: 1 x EQMOD Cable Only the above package content, other are not included. Note: Light reflection and different displays may cause 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.