iOptron CEM40 - Other Ports on a CEM40 G Mount

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2.3.2. Other Ports on a CEM40G Mount
Power Panel on Rear of RA axis
Figure 3. CEM40G Power Panel on Rear of RA axis
 POWER (I/O): Power Switch
 DC 12V 5A: DC power socket to power the mount (2.5mmX5.5mm, center positive)
 USB2.0: USB input port to connect to iPolar, iGuider, USB 2.0 Port on dovetail saddle, as well as
mount computer control and firmware upgrade.
Ports on the Dovetail Saddle
On the back of the dovetail saddle, there are one USB2.0 port and two DC 12V outputs.
Figure 4. Port on back of the dovetail saddle of a CEM40G mount
 1X USB 2.0 ports with standard type A connectors for connecting accessory;
 2X DC12V power outlet (2.1mmX5.5mm, center positive, max. current 3A in total) for powering
accessories such as CCD cameras, filter wheels, or electric focusers;
The ST-4 guiding port is located in front of the dovetail saddle.
Figure 5. Port on front of the dovetail saddle
 ST-4: ST-4 compatible autoguiding port. The wiring is shown in Figure 6