Monitor arm review
Ergotron LX Monitor Arm Review — The €130 Fix For Your Neck
Ergotron LX Desk Monitor Arm — manufacturer/retailer product photo.
Listen to the verdict
Verdict
The Ergotron LX is the monitor arm to buy if you take your desk seriously. Infinite smooth adjustment, all-steel construction, and a 10-year warranty where most cheap arms give you one. Pay once, sit straight forever.
What works
- 10-year warranty — most cheap arms give you one
- Smooth, infinite adjustment across three axes
- Built-in cable management channel down the arm
- Holds monitors up to 11.3kg without drift
- Steel and aluminum — zero flex, zero wobble
- C-clamp and grommet mounts both included
What doesn't
- Spring tension setup requires an Allen wrench and patience
- Light monitors (under 3kg) are hard to tune
- €130 vs €40 generic clones — premium price
- VESA mount only — won't fit monitors without VESA holes
Why your neck hurts and what to do about it
Look at your monitor right now. The top of the screen is probably below eye level. You've been tilting your head down 15° for six hours. Your trapezius is permanently engaged. That's your problem.
A monitor arm raises the screen 5–15cm higher than any desk stand can. Suddenly you look slightly down at the centre of the screen instead of bending the neck. Eight hours later, no neck pain. The fix is mechanical, not muscular — the other half of the posture equation is a proper chair, covered in our best office chair under €1500 guide. On the go, a MOFT laptop stand is the packable version of the same eye-level fix.
The spring tension setup nobody warns you about
Out of the box, the LX is tuned for a heavier monitor near the top of its weight range. Mount a lighter display and the arm can drift upward when you let go. Ergotron's manual covers this: the spring tension is adjustable via an Allen key port at the lower joint, and it needs backing off to match a lighter panel.
Nobody reads the manual. Then they leave three-star reviews claiming "it won't stay put." It will, once the spring tension is matched to the actual monitor weight.
Watch before you buy
Ergotron's official setup video
Ergotron's own installation video: mounting the LX, adjusting spring tension, and routing cables through the built-in channel. It is manufacturer marketing rather than an independent review — useful for the mechanics, not for judging the claims.
Why the 10-year warranty actually matters
Most cheap arms come with one year of coverage. Ergotron covers the LX for ten, which means a gas piston that gives out in year eight is still Ergotron's problem rather than yours. For something holding your monitor — a panel like the Dell UltraSharp U2723QE — 70cm in the air over your face every day, that's not marketing fluff.
"Cheap is expensive when you average it over years."
Ergotron LX vs the €40 alternatives
The €40 arms are built to a price: a friction-and-spring joint rated for a narrow weight band, and one year of warranty. The LX is a gas-cylinder arm rated to 11.3kg, in steel and aluminum, with ten. The price gap is about €90. The coverage gap is nine years — and sag is the failure mode cheap arms are known for, which is precisely what a gas cylinder and a decade of warranty are there to address.
Who should NOT buy this
- Monitors under 23" — overkill; a basic stand is fine.
- Very lightweight monitors (under 3kg) — spring tension is hard to tune that low.
- Desk too thin (<10mm) or too thick (>60mm) — the clamp won't grip safely.
- Glass-top desks — use the grommet mount and drill a hole, or look at the freestanding HX.
Matching the LX to your actual monitor
The LX is a single-arm mount rated to 11.3kg, and that one number decides most of the fit question — but it decides it differently depending on which side of the range you're on.
A standard 24″–27″ monitor (roughly 4–7kg)
This is the calibration point the arm ships tuned for out of the box. A panel in this band — something like the Dell UltraSharp U2723QE, which is 7.26kg with its own stand attached and lighter once that stand is removed for VESA mounting — sits comfortably mid-range on the LX's 11.3kg limit. Expect it to hold position with little to no spring adjustment.
A large or ultrawide monitor (7–11.3kg)
Still within spec, but you're closer to the ceiling. Confirm the panel's VESA-mount weight (not the boxed weight, and not the weight with its factory stand attached) against 11.3kg before buying — the LX is VESA-only, so a monitor without VESA holes can't go on it regardless of weight.
A light monitor or a portable/secondary display (under 3kg)
This is the case the LX handles worst. The spring is tensioned for a heavy default, and backing it off far enough for a genuinely light panel is fiddly — the arm can drift or feel loose even after adjustment. A cheaper, lighter-duty arm is the better fit here; save the LX for the monitor doing the heavy lifting.
Two monitors, or a monitor plus a laptop
The LX reviewed here is a single-arm mount for one display. If you need to mount two panels, or a monitor and a laptop tray, that's a different Ergotron model (the LX Dual or a dual-monitor kit) — buying two single LX arms for a dual setup is possible but check your desk's clamp spacing before ordering both.