The Dell OptiPlex 3060 SFF supports 8th and 9th Gen but skips earlier chips

The 3060 SFF uses an LGA 1151 socket that accommodates 8th and 9th Gen Intel Core processors — i3-8100, i5-8500, i7-8700, and their 9th Gen equivalents. Notably absent: 6th and 7th Gen support, so you can’t repurpose older Skylake or Kaby Lake chips here. Intel changed the pinout even though the socket looks the same, and Dell’s implementation enforces that split.