11Understanding the control panel and LEDsThis section describes the controls and LEDs on your SBCE unit.✏ NOTEThe illustrations in this document might differ slightly from your hardware.✏ NOTEThe control panel door is shown in the closed (normal) position in the illustration. To accessthe power-control button, you must open the control panel door.Keyboard/mouse/video (KVM) select button: Press this button to associate the keyboard port,mouse port, and video port with this blade server. The LED on this button flashes while the requestis being processed, then is lit when the ownership of the keyboard, mouse, and video has beentransferred to this blade server. It can take approximately 20 seconds to switch the keyboard, video,and mouse control to the blade server.Although the keyboard that is attached to the SBCE unit is a PS/2*-style keyboard, communicationwith it is through the USB. The operating system in the blade server must provide USB support forthe blade server to recognize and use the keyboard and mouse. The SBCE unit uses USB for internalcommunication with these devices. When you are running an operating system that does not haveUSB device drivers, such as in the following situations, the keyboard responds very slowly:• Running the blade server integrated diagnostics• Running a BIOS update diskette on a blade server• Updating the diagnostics on a blade server• Running the Broadcom firmware CD for a blade serverIf there is no response when you press the keyboard/mouse/video select button, you can use themanagement-module Web interface to determine whether local control has been disabled on theblade server.Blade-error LEDInformation LEDLocation LEDActivity LEDPower-on LEDCD/diskette/USBselect buttonKeyboard/mouse/videoselect buttonNMIPower-control button
