How does one disable it?
I did read here that "the system has been switched on by default and can only be turned off by digging into advanced options under Windows Update, diving deep in update and then poking about in security and settings." ... but they didn't say how !
UPDATE... More googling, found instructions here
2.Click on Update and Security
3.Under Windows Update, click Advanced Options in the right side of Window
4.Click on the Choose how upgrades are delivered and then move the slider to Off position, to disable Windows Update Delivery Optimization or WUDO.
5.Move the slider to OFF so that the your PC cannot download updates from anywhere other than Microsoft servers; if you think you can afford to download updates from PCs on your network, keep the slider in ON position and select PCs On My Local Network
There is another option there that says PCs on My Network and PCs on the Internet. It is selected by default and is used for Windows Update Delivery Optimization.
You can choose it later if you wish to get updates faster and do not mind paying a bit of extra money on metered connections