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Subject :
	CS1732B - Firmware Upgrade Error Code '4108'

Description :
	We have followed the product manual guidance to upgrade the KVM switch firmware. An error code '4108' is shown up when we run the firmware upgrade utility. Why?

Solution :
	"Error Code '4108' means ""No device found on serial port"". Condition: No device answers the enumerate command after the application has tried every possible serial port. Solution: 1). Check that the device's cables are properly connected and aren't damaged. 2). Check that the device is up and running normally. 3). Don't forget to invoke KVM switch into upgrade mode. (OSD --> [F4] --> FIRMWARE UPGRADE)"

Related FAQ :
	US421's FAQ(switching function)
	KN9116's Basic FAQ (Hotkey"F12",ArrayMode,Mouse Cursors issue)
	I get an error code 4108 when I upgrade KVM switch via UC232A cable, I'm sure the UC232A driver is correctly installed. When I am trying to upgrade my KVM Switch firmware via UC232A cable, the upgrade
	CS1734A - Firmware Upgrade Error Code '4108'
	Firmware Upgrade


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