Marshall Electronics CV610-U3 User Manual page 12

Use camera built-in virtual COM port
To operate the camera third party control software / interface, control distance may be short.
System Configuration B
Before you use the virtual COM port, you need to install the driver
onto your PC/Mac. You can download the driver (PL2303 Prolific
Driver Installer v1.12.0) here:
You can use this Virtual COM port to control the USB camera.
Steps:
1. Install driver onto PC/Mac. After successful installation, you can
find the port "Prolific USB-to-Serial COM Port" in computer
Setting, Device Manager.
2. Connect the camera with your PC/Mac USB3.0 port.
3. You can find a Virtual COM port in your PC/Mac application
software setting.
You can choose the Virtual COM to control the camera.
4. COM port control system support: Windows 7, 8, 10 and Mac OS
Use RS-232 (VISCA), RS-422(VISCA)/485 (PELCO P/D) Control via Extension
Module.
The Extension Module is required when using RS-232 / RS-422/485 signals with external control devices.
You can use RS-232 port or RS-422/485 port on Extension Module to connect to optional controllers, such as
joystick control keyboard, control PC station, to operate the camera.
To perform pan/tilt and zoom operations using the joystick of the control keyboard, and to perform the Preset
operation using the control buttons.
An application software that supports this unit is needed if you use PC station.
System Configuration C
http://plugable.com/drivers/prolific
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