@bashNinja, here is a detailed list of what I added and removed from my HP 290:
- Ubuntu 20 dual boot with Windows 10 (separate partitions)
- Intel® Core™ i5-8500T Processor with Thermal Grizzly Kryonaut Thermal Paste
- Intel 665p Series M.2 2280 1TB PCIe NVMe 3.0 x4 3D3, QLC Internal Solid State Drive (SSD) SSDPEKNW010T9X1
- Crucial 16GB Kit (8GBx2) DDR4 2400 MT/s (PC4-19200) SR x8 DIMM 288-Pin Memory - CT2K8G4DFS824A
- HDMI Dummy Plug Headless Ghost Display Emulator (Fit Headless-1920x1080 New Generation@60Hz)-3Pack
- M.2 Screw Kit,NVMe Screw m.2 SSD Mounting Kit
I have disconnected or removed the following hardware that came with the system:
- 500GB 7200rpm SATA HDD
- M.2 AC-WiFi + BT 4.2
- DVD-RW slim drive
- 4GB DDR4
Hope this helps.