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Ergotron HX Desk Monitor Arm

Holds a 42-pound ultrawide steady. Anything under 20 pounds is too light for it.

Monitor arms: the weight rating decides before the brand — #3

Overall

7.8

out of 10

Axis scores

Strongest on Durability (9.2), weakest on Value (7.0), a 2.2-point spread. The 7.8 overall is the plain average of all 4 Home axes, with no weighting.

Ergotron HX Desk Monitor Arm — axis scores out of 10Horizontal bar chart of editorial scores out of 10 across 4 axes. Bars run from a shared zero baseline; longer is better. Ergotron HX Desk Monitor Arm: Value 7.0, Durability 9.2, Ease of use 7.4, Design 7.6.ValueErgotron HX Desk Monitor Arm — Value 7.0 out of 107.0DurabilityErgotron HX Desk Monitor Arm — Durability 9.2 out of 109.2Ease of useErgotron HX Desk Monitor Arm — Ease of use 7.4 out of 107.4DesignErgotron HX Desk Monitor Arm — Design 7.6 out of 107.6Editorial score out of 10 — higher is better
  • Value — What the same money buys elsewhere
  • Durability — Failure and fade reports past the one-year mark
  • Ease of use — Setup, daily operation, cleaning, maintenance
  • Design — Build quality and how it sits in a room

Specs

Monitor weight
20 to 42 lb
Screen size
Up to 49 in, depending on weight
VESA
75, 100, 200 x 100, 200 x 200
Mechanism
Constant Force (mechanical spring)
Lift / reach
11.5 in lift, 23.6 in extension
Tilt
+70° / -5°
Mounting
Clamp for 0.4 to 2.4 in desks, or grommet
Warranty
10 years

As published by the manufacturer. We didn't measure these ourselves.

Is it for you

Buy it if

  • A 49-inch super-ultrawide or a heavy 4K monitor that other arms cannot lift
  • Desks where the monitor rarely moves once positioned

Skip it if

  • Your screen weighs under 20 pounds, because the arm will not hold it down
  • You want a lot of height range for switching between sitting and standing
  • Thin or hollow-core desktops, which a heavy arm and screen can crack

This is the arm for screens that break other arms. PCWorld picked it as its heavy-duty choice and noted how smooth it is for its size, and how little of it is plastic.

The weight window cuts both ways. Twenty pounds is the minimum, and a light monitor on an HX drifts back up because the spring outpulls it. Weigh the monitor with its VESA plate before ordering.

It has less height adjustment than the lighter arms here, and PCWorld marked that down along with the bulk. On a desk that stays at one height it rarely matters.

A clamp holding 40-plus pounds at full extension puts a lot of leverage on one spot of the desktop. On anything other than solid wood or a thick steel-framed top, use the grommet mount or a reinforcement plate.

Last updated . The scoring method is on how we rank.