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Serial-to-USB adapter cable and software
$27.95This adapter allows you to connect your Celestron NexStar, GPS, CPC, or CGE computerized telescope to your PC through a high speed USB port, rather than through a slower serial port . . . -
Celestron NexStar serial-to-USB cable
$22.95The Celestron #93920 NexStar RS-232 Cable connects your NexStar telescope to a laptop or PC so you can update your telescope firmware or control your scope from your PC using a planetarium software program.