Computers and monitors
IP telephone systems, routers and switches
Notes on Windows 10 / Windows 8.1 / Windows 7
Microsoft planned that as of November 1, 2016, it would no longer allow original equipment manufacturers (OEM) to factory install Windows 7 or Windows 8.1. Windows 10 would be the only allowed operating system to ship with new systems. That has been extended for one year, but Windows 7/8.1 are only available via a downgrade at the factory.
The factory downgrade from Windows 10 to Windows 7/8.1 may cost customers $20-30. Consult with your reseller as you quote/order for details and pricing if you need to have machines shipped with something other than Windows 10.