What: /sys/devices/platform/dock.N/dockedDate: Dec, 2006KernelVersion: 2.6.19Contact: linux-acpi@vger.kernel.orgDescription: (RO) Value 1 or 0 indicates whether the software believes the laptop is docked in a docking station.What: /sys/devices/platform/dock.N/undockDate: Dec, 2006KernelVersion: 2.6.19Contact: linux-acpi@vger.kernel.orgDescription: (WO) Writing to this file causes the software to initiate an undock request to the firmware.What: /sys/devices/platform/dock.N/uidDate: Feb, 2007KernelVersion: v2.6.21Contact: linux-acpi@vger.kernel.orgDescription: (RO) Displays the docking station the laptop is docked to.What: /sys/devices/platform/dock.N/flagsDate: May, 2007KernelVersion: v2.6.21Contact: linux-acpi@vger.kernel.orgDescription: (RO) Show dock station flags, useful for checking if undock request has been made by the user (from the immediate_undock option).What: /sys/devices/platform/dock.N/typeDate: Aug, 2008KernelVersion: v2.6.27Contact: linux-acpi@vger.kernel.orgDescription: (RO) Display the dock station type- dock_station, ata_bay or battery_bay.