For a project I needed to work with an android tablet, but it had as restriction wireless was not allowed.
Typically a tablet is not foreseen to be physically connected to the network, so I had to find a solution. Luckily the tablet in question was a Nexus 10 with Android 4.4 kitkat. The tablet has a micro usb and a pogo docking port. As the local fry's had nothing with pogo I did go for the USB approach. This is also more universal. Has they had no micro USB to Ethernet, I had to buy a USB OTG and USB to Ethernet adapter. The Ethernet adaptor is the Linksys USB300M. This works out of the box. Enable airplane mode and you are working fully wired.
UPDATE: there is no need to enable airplane mode, android automatically disables the wireless.