Docking IRQ tells the computer which interrupt request (IRQ) to assign to the docking station or replicator during the boot sequence. If DockingIRQ is set to Optimized, the docking station or replicator is assigned a dedicated IRQ during the boot sequence. Select IRQ11 if a peripheraldevice requires the use of the dedicated IRQ.Docking StatusDocking Status shows whether the computer is attached to a Dell Latitude C/Port Family APR or C/Dock Family Expansion Station. No user-selectable settings are available for this option.External Hot KeyExternal Hot Key lets you use the key on the external keyboard the same way you use the key on the computer's keyboard.Set this option to Scroll Lock (the default) if you are using an external keyboard. Set this option to Not Installed to disable this function on theexternal keyboard.External Media BayExternal Media Bay identifies the type of device—Diskette Drive, CD-ROM Drive, DVD-ROM Drive, or LS-120 Disk Drive—installed in theexternal media bay. If the external media bay does not contain a device or is not attached, this option reads Not Installed. No user-selectablesettings are available for this option.Infrared Data PortInfrared Data Port is available only when the computer is docked; otherwise, this option is blue or dimmed. This option allows you to avoidresource conflicts by disabling or remapping the address of the infrared port on the Dell Latitude C/Port Family APR or C/Dock Family ExpansionStation. The COM1, COM2, COM3, and COM4 settings allow you to take advantage of the computer's infrared support.Settings for this option are:l Disabled — Disables the infrared data port and makes the direct memory access (DMA), IRQ, and I/O resources available for another serialdevice to usel COM1 — Maps the infrared data port to COM1l COM2 — Maps the infrared data port to COM2l COM3 (the default) — Maps the infrared data port to COM3l COM4 — Maps the infrared data port to COM4For a change to Infrared Data Port to take effect, you must reboot your computer.Infrared ModeInfrared Mode is visible only when the computer is docked and Infrared Data Port is enabled. Infrared Mode manages the infrared resources ofthe computer and the external devices you use with it. This option lets you select Fast IR (the default) or Slow IR to use with an infrared device.For a change to Infrared Mode to take effect, you must reboot your computer.Internal CacheInternal Cache displays the amount of internal cache your computer has. No user-selectable settings are available for this option.Keyboard ClickKeyboard Click lets you choose whether the computer's keyboard makes audible clicking sounds. Click Volume must be enabled for KeyboardClick to function. The volume of the simulated key clicks is controlled by the Click Volume setting.Settings for this option are Disabled (the default) and Enabled.
