In order to utilize the online firmware updates for your Celestron computerized telescope, you need this programming cable. Cable connects to the PC port on the telescope's drive base.
For use with CPC, CGE, NexStar GPS Series models. Is compatible with Advanced GT and NexStar i telescopes when used with Auxiliary Port Accessory Kit (93965).
This cable connects to your PC's serial port. For use with a USB port, you must purchase a serial to USB converter (18775). Length: 84"
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