This cable is connect PC/Laptop (usb side) to for Skywater AZ- mount auto Guide Specially, other device may not support.USB RJ12 cable for Skywatcher AZ- 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/.USB to RJ12/6P6C interface cable for Replace the hand control box cable, just one cable connect the AZ- mount .USB connect the az- 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 X OS 9 OS 8Windows .NET (Version 4.2 and greater) Windows RTNote: If your operating system can not download the drivers automatically, you may need to download and install a driver from http://.ftdichip.com/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 guide as following links:https://.ftdichip.com/Support/Documents/InstallGuides.htm 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 will be able to identify it.5.It is a necessity if you plan on imaging anything for longer than a single quick exposure.It's wicked . Colour:blackMaterial:PVC+MetalSize: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 cause the color of the item in the picture 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.