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Lift the system up and away from the dock. Press the Eject button on the dock to undock it. At the DELL logo screen, press F12 to access the one-time boot menu. Push the lock switch towards the rear of the dock to unlock it. The USB drive does not need to be bootable device. If it's doesn't boot correctly, undock the system and reseat it. You can dock the system while it is turned on, however if you docked it whilst it was off - you can turn the system on by pressing the Power Button on either the system or the Dock. (You should hear a click as it seats in place.) Compatible Dell Laptops/Notebooks: Latitude E6440. Line up the alignment marks on the dock and the system and push firmly down to seat the system on the docking connector. This is the daughter IO Circuit Board with VGA port and one USB port that connects to the E6440 Motherboard. This article contains information regarding the Latitude E6410: Visual Guide to your Computer with chassis images and location of ports. Click Flash from file to browse the USB drive to locate the downloaded file. DO NOT try and dock a system with this switch locked. At the DELL logo screen, press F12 to access the one-time boot menu. Push the locking switch at the right hand side of the dock towards the rear of the dock to unlock it. If the system has a battery that extends behind the machine, then use the slide at the rear of the dock to adjust the sliding block flush with the battery. 4 USB 3.0 / 3.1 Gen1, 1 VGA, 1 HDMI, 1 Kensington Lock, 1 Docking Station Port, Audio Connections: combined 3.5 mm stereo jack, Card Reader: SD card with up to 32 GB. Have the dock in a location with enough space to support the system once it's docked. This dock can work off of the Notebooks Battery or you can connect an AC adapter.