The Auxiliary Port Accessory was designed to expand your Advanced GT's ability to interface with multiple devices including personal computers and the Celestron CN-16 GPS.

The Auxiliary Port Accessory has a PC port which allows the user to update motor control firmware downloaded from the internet. It has two auxiliary ports, one for the NexStar Hand Control and one for the CN-16 GPS Accessory. The Auxiliary Port Accessory can also be used on the NexStar "i" series telescopes for upgrading motor control firmware. This kit includes the Auxiliary Port Accessory and Programming Cable (#93922).

Note: The Auxiliary Port Accessory comes standard in the CN-16 GPS Accessory Kit for the Advanced GT Series (#93966). The Programming Cable is NOT included in the CN-16 GPS Accessory Kit for the Advanced GT Series.