Structural Foundation 4 mm of sag at the far end of the card. A LEGO brick has been installed as a support column. The brick is structurally sound. Recommend: sag bracket.
Structural Roof Backplate intact. Two backplate screws missing. Seller could not say where they went. We think we know.
Plumbing Thermal paste Original paste has dried to the consistency of a biscuit. Hotspot 14 C above core temperature under load. Recommend: repaste.
Electrical 12V-2x6 connector Connector seated about 90%. One pin shows discoloration "of concern". Recommend: push it in all the way, and keep a fire extinguisher nearby.
HVAC Fans and cooling Both fans spin. The left one makes a noise the seller described as "character". Bearings are tired but not finished.
Noise Coil whine Audible above 300 fps, in menus, and when the room is quiet. Comparable to a mosquito playing the violin. Not a defect, the manufacturer says.
Pests Dust and cat hair Moderate dust in the fin stack. Cat hair throughout. No cat was disclosed. One moth, deceased.
Previous owner Unpermitted modifications BIOS has been flashed at least once. A sticker reading "DO NOT MINE" has been applied over a second sticker reading "MINING RIG 4".