Firmware update v4401 is not on our download page. The firmware for our chip in the dock is updated automatically when it connects to the PC with new DisplayLink software for the first time.
Firmware update v4401 is distributed by Targus and it is new firmware for the USB 3.0 root hub in the dock.
I believe this can fix USB enumeration issues between the USB 3.0 hub and the USB 3.0 host controller on some Windows 8 platforms (I think it depends what USB 3.0 host controller you have in your PC as to whether you see enumeration issues).
I think it would be best to contact Targus about applying this update, but I suspect it will be recommended if you are seeing enumeration issues.
Wim
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