Troubleshooting Your System 1056 If two or more server modules are installed in the chassis, press the KVM selection button on adifferent server module.NOTE: After pressing the KVM selection button, allow approximately two seconds for the KVM functions tochange to a different server module.If the mouse is connected to the back-panel KVM module and works with another server module, thefirst server module may need to be reseated. See "Server Modules" on page 73. If reseating the servermodule does not help, the server module may be faulty. See "Getting Help" on page 127.7 Swap the mouse with a known-working mouse and repeat step 5 and step 6. If the mouse does notwork with any server module, see "Getting Help" on page 127.Troubleshooting USB DevicesNOTE: USB devices can be connected only to the front-panel custom cable. Total length of a USB cable should notexceed 3 m (9.8 ft).Problem• A symptom of a USB problem is indicated by a system message• USB device or USB device cable• Keyboard/Video/Mouse (KVM) custom cable• Server moduleAction1 Ensure that the server module(s) is turned on.2 Check the USB device connection to the front-panel custom cable.3 Check the custom cable connection to the front-panel custom-cable connector.4 Swap the USB device with a known-working USB device.5 If another server module is installed, connect the USB device to that server module. If the USB deviceworks with a different server module, the first server module may be faulty. See "Getting Help" onpage 127.Responding to a Systems Management Alert MessageThe Dell™ Remote Access Controller/Modular Chassis (DRAC/MC) management applications monitorcritical system voltages and temperatures, and the cooling fans in the system. For information about theDRAC/MC alert messages, see the Configuration Guide.
