Item Descriptions:-Efficient Serial Communication: This FTDI USB to RJ9 (4P4C) cable facilitates seamless serial communication between your PC or laptop and the hand controller, ensuring efficient data transfer.-Broad Telescope Compatibility: Compatible with Celestron NexStar 4SE, NexStar 6SE, NexStar 8 SE, C8i SE, Nexstar 8i, Nexstar 90GT, 90 SLT, Advanced VX, 102 GT, NexStar 114, NexStar 114GT, SLT 130, CGEM, or CGEM II. This cable enhances the functionality of various telescope models.-Wide Operating System Compatibility: Supports a variety of operating systems, including all Windows versions (Win7/8/10/XP) and others such as compatible with iOS, Linux, and Android. This broad compatibility ensures users can connect their telescopes to different devices.-User-Friendly Telescope Control: By connecting your PC or laptop to the telescope via the USB to RJ9 cable, users can control the telescope and align it with celestial objects. The ability to download new data to the telescope's database simplifies the stargazing experience.-Long Cable Length with FTDI Chip Integration: With a generous cable length of 180cm, users have flexibility in positioning their equipment. The integrated FTDI chip enhances data transfer reliability, providing a stable and consistent connection between the telescope and the computer.Package:1 x USB to RJ9 Cable Telescope Console Upgrade CableItem Specifications:Cable length:1.8mColour:BlackInterface type 1:USBInterface type 2:RJ9 port