i5 6300hq 16g DDR4 2400MHz SAMSUNG PM951 256g GTX 960M 4k 1830
10.12.5
bios 1.2.25
some issues: 1.BIOS 1.2.25 issue: https://github.com/wmchris/DellXPS15-9550-OSX/blob/master/Tutorial_10.12_Step7.md#osx-doesnt-boot-anymore-after-firmware-upgrade-to-1225-or-higher 2.4K issue (since I don't have 4K display, I haven't tried it): https://github.com/wmchris/DellXPS15-9550-OSX/blob/0bb045ae8df72491d4dd0e4db5516afbd4a99c0d/10.12/Post-Install/AD-Kexts/UHD-Kexts/readme.md