From new port replicators to full docking solutions that fit any usage scenario with smaller footprints and streamlined cabling, users can “hot undock.”

One thing to consider … the docking station does not present itself to the OS as a docking station … so there is no undock option.

As such, if you ‘hot undock’ while a disk operation is in progress on an external device … you risk damaging the data (at minimum logically … possibly even physical damage to the device).

Microsoft technotes is very explicit regarding undocking …

Removing a portable computer without using Undock can result in system instability, data loss, or even hardware damage. To avoid loss or damage, use Undock to undock your computer, or shut down the system and undock the portable computer while your system is off. Undocking a portable computer while it is in either standby mode or hibernate mode can result in data loss and system instability.