Celestron Nexstar Hand Control FTDI Update Firmware Cable for Celestron Nextstar Hand Control
This cable allows you to connect your Nexstar handset to your computer and enable remote control using Celestron's Nexremote software and other third-party applications. Also used for upgrading the handset firmware.
Not suitable for recent (2019 on) handsets which have a mini USB connector - only handsets with square 4 pin modular socket as pictured.
Connect the cable to the handset only. DO NOT connect to your telescope mount.