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A builder’s glossary

Sag, shroud, intake, low-profile, PCH: the words that show up in our guides, explained in a sentence each.

Our guides use a handful of PC-building words without stopping to explain them. Here they are, one sentence each, with a link to where they matter.

A to Z

AIO cooler
An all-in-one liquid cooler: a pump, a radiator and two tubes, sealed at the factory. Our combs keep the two tubes together.
Exhaust
A fan pushing warm air out of the case. Which way should the air go?
Expansion slot
The openings at the back of a case where cards mount. Our PCIe fan mounts use them like a card would: two slots, three slots or one mounting position, depending on the mount.
Ferrous
Containing iron, so a magnet sticks to it. The magnetic base of our Adjustable GPU Support needs a ferrous surface; a fridge magnet is the easiest test.
GPU sag
A heavy graphics card drooping at its unsupported end. A GPU support shares the weight from below.
Intake
A fan drawing cool air into the case.
Low-profile
Half-height expansion brackets used by smaller cases. Our low-profile 40 mm and 60 mm mounts suit them; the high-profile 60 mm mount needs a full-height opening.
NVMe drive
A fast solid-state drive on the motherboard. In our EliteDesk tests it showed the biggest change: 19.0°C cooler at peak than stock.
PCH (chipset)
The motherboard’s platform controller hub. In our EliteDesk tests it peaked 13.0°C cooler with the five-fan mount than stock.
PETG-HF
The premium material every product body we make is manufactured from, chosen for thermal resistance and structural durability. Care card.
PSU shroud
The cover over the power supply at the bottom of many cases; often where a GPU support stands.
Slot cover
The blank metal plate that fills an unused expansion slot. You remove them to fit a PCIe fan mount, and keep the screws to secure it.
Vented lid
The perforated lid on some HP EliteDesk 800 Minis. Our sleeve needs it, because the fans move air through the perforations.

Measurements and fit, design by design.

Take the two-minute fit check

Keep reading

The off-white 120 mm PCIe fan mount with a black fan and illustrative airflow
Oct 9, 2026Guides

One thumbscrew

The 120 mm PCIe fan mount takes a single expansion-slot position and goes in with the case thumbscrew. What that means for your case, and what it does not.

Oct 9, 2026Guides

In the box, and what you bring

Fans, screws, phones and trackers. Design by design, what arrives with the part and what to have ready before it does.

The five-fan EliteDesk 800 Mini fan mount, blue intake and red exhaust airflow shown
Oct 2, 2026Guides

Nineteen degrees: notes from the EliteDesk tests

11 logged stress runs. With the five-fan mount, the NVMe drive peaked 19.0°C cooler and the chipset 13.0°C cooler than stock, and the CPU 9.0°C cooler than with our legacy mount.