This cable is connect PC/Laptop (usb side) to for Skywater AZ-GTI mount auto Guide Specially, other device may not support. USB RJ12 cable for Skywatcher AZ-GTI Theodolite Free hand control PC directly connected to EQMOD cable. please double check your device before buy it . Build in FTDI 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 connect the AZ-GTI mount . USB connect the az-gti 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 R2 Windows 7 Windows 7 x64 Windows Server 2008 Windows Server 2008 x64 Windows Vista Windows Vista x64 Windows XP Windows XP x64 Windows ME Windows 98 Linux Mac OS X Mac OS 9 Mac OS 8 Windows CE.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. Besides, As the feedback from our customer , some customers do not know how to install the driver for Mac 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 hard to find. 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 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