Microsoft still hasn't gone public with how much it plans to charge its PC maker partners (OEMs) or customers with Windows 10.
But thanks to a document published on Microsoft's OEM Partner Center site, we do know how much it is charging PC makers for Windows 8.1 on Intel-based tablets. (And why Microsoft describes its under nine-inch screen pricing as "zero dollars" instead of free.)
Read more: How much does Microsoft make from PC makers with Windows 8.1? | ZDNet