Rose Electronics CrystalView EX5 HDMI - Manual (Page 15)

TROUBLESHOOTING
Installation and Operations Manual 11
The Status, Link, Video, and USB LEDs on the transmitter and receiver will
indicate any problems with the connections or unit. Please refer to Table 1
for a description of the different LED conditions that may occur.
All LEDs on the Transmitter / Receiver unit are off
 Verify that the power adapters are properly connected and supplying +5V
DC to the transmitter and to the receiver
All LEDs on both the Local Extender unit and Remote Extender unit are
on, but the USB device does not operate correctly or is detected as an
“Unknown Device” in the operating system.
 Disconnect the KVM extender product from the computer and connect
the USB device directly to the USB port on the computer. If the device
does not operate properly, consult the user documentation for the
device.
 Update your system BIOS, chipset or USB Host controller drivers from
your System/Mother board manufacturer’s website.
 Make sure the Operating System has all the latest updates installed.
 If the device operates properly when directly connected to the computer,
connect another device (of a different type) to the KVM extender product.
Connect the KVM extender product to the computer.
 If the second device does not operate, the KVM extender product may
be malfunctioning. Contact technical support for assistance.
 If the second device does operate properly, the first device may not be
compatible with the KVM extender product.
Specific resolution doesn’t show in the graphics/video settings
 Latest video drives are not installed or resolution is not supported.
 The specific resolution is not listed by the monitors EDID and is therefore
not supported with the KVM extender product. See appendix C.