VESA monitor mounts: sizes, arms, stands & adapters

M4 · 75×75 and 100×100 mm — the small end of the same standard

Quick answer

Computer monitors use the same VESA standard as TVs, just smaller: almost all VESA-mountable monitors carry a 75×75 or 100×100 mm hole pattern with M4 screws (typically M4 x 10 mm). Any monitor arm, stand or wall mount listing those patterns fits; screens without rear holes need a clamp-on adapter kit, and iMacs need Apple's own VESA adapter. Check the weight rating — desk arms usually carry about 9–20 lb per screen. Per-model verified specs live in the monitor database.

Monitor VESA size chart

Pattern (mm)	Screws	Typical screens
75×75	M4	Portable and compact monitors up to ~24"
100×100	M4	The default for 21–34" monitors, incl. most ultrawides
200×100	M4/M6	Some large ultrawides and 40"+ format displays
200×200	M6	Large-format displays crossing into TV territory — see the 200×200 hub

The full standard, from monitor sizes up to 800×400 mm TVs, is explained in What is VESA. Measuring works the same as on a TV — center-to-center, in millimeters (2-minute guide).

Arm, stand or wall mount — pick by desk, not by brand

Desk-clamp arm: frees the whole footprint, adjusts height/tilt/rotation, needs ~4 in of clear desk edge for the clamp. Best for sit-stand desks and dual setups.
VESA monitor stand: a heavier freestanding base that replaces a flimsy factory stand — no clamping, no drilling, moves with you.
Wall mount: the same small fixed/articulating brackets used for small TVs; our 100×100 hub shows what carries that pattern.

Whichever form factor: the holes must match (75×75/100×100), and the monitor's weight — usually 6–15 lb for a 24–32" panel — must sit inside the mount's rating. Ultrawides and thick gaming monitors run heavier; check the spec sheet number without the stand.

No VESA holes? Adapters cover most cases

Thin-bezel and portable monitors often skip threaded holes. Two honest fixes:

Clamp-on adapter kit — grips the top and bottom edges and provides a standard 75×75/100×100 plate. Match the kit's supported panel thickness and weight, and keep vents uncovered.
Manufacturer adapters — iMacs take Apple's factory VESA mount adapter (built-to-order iMacs can ship VESA-ready without a stand); several all-in-ones have similar first-party kits. Check the maker's accessories page before buying generic — the full Apple picture is in the iMac & Studio Display VESA guide.
75-to-100 conversion plates — a flat plate that bridges a 75×75 mm monitor to a 100×100-only arm plate (or the reverse). Rarely needed, since most arms list both patterns — check the arm's spec before adding hardware.

Popular monitors confirmed to ship without VESA holes

These models generate a steady stream of "how do I mount it" questions; each was checked against the manufacturer's own documentation or support channels (sources below):

Model	Status	Mounting route
Dell SE2419H / SE2719H (incl. HX)	No holes; no first-party adapter	Third-party clamp-on kit; the user guide has no wall-mounting section
HP ENVY 27s	No built-in holes	HP's snap-on bracket (part 911361-001) is discontinued — a clamp-on kit is the remaining route
Acer SB220Q / R240HY	No holes; Acer sells no adapter	Third-party clamp-on bracket sized for the panel
Lenovo L24q-10	Lenovo's spec sheet: "VESA mount: No"	Third-party clamp-on kit (the Q27q-10, often confused with it, does have 100×100 — see its page)
ViewSonic VX2776-smhd	Product page: not VESA compatible	Clamp-on kit — or note the VX2776-4K-mhd sibling does carry 100×100 (verified specs)

Double-check before buying

Confirm the exact pattern (75×75 vs 100×100) and that your arm lists it — most list both.
Weigh the spec: monitor weight without stand vs the arm's per-screen rating.
M4 screw length: too long bottoms out on thin panels — hand-test, same rule as with TV screws.
Desk clamp needs a solid edge; glass and thin veneer desks call for a grommet mount or a freestanding base.

Frequently asked questions

How do I know if my monitor is VESA compatible?

Look at the back: a VESA-mountable monitor has 4 threaded holes in a 75×75 or 100×100 mm square, sometimes under plastic caps or a snap-off panel. The spec sheet states it as "VESA 100×100" or "VESA mount: yes". No holes and no removable panel usually means a non-VESA design that needs an adapter kit.

What VESA size do computer monitors use?

Two sizes cover almost everything: 75×75 mm on compact and portable screens and 100×100 mm on most 21–34-inch monitors, both with M4 screws (FDMI MIS-D). Large-format and some ultrawide displays step up to 200×100 or 200×200 mm — check the spec sheet before buying an arm.

What screws do VESA monitor mounts use?

M4 metric screws, typically 10 mm long — the spec you'll see written as "M4 x 10". Curved-back monitors may need longer M4 bolts plus the spacers that come with the arm. TVs are different: they move to M6 and M8 threads, covered in our VESA screw size guide.

Can I mount a monitor that has no VESA holes?

Often yes, with a clamp-on non-VESA adapter kit that grips the panel edges and provides a 75×75/100×100 plate — check the kit's supported thickness and weight. iMacs are the special case: Apple sells a factory VESA mount adapter, and built-to-order iMacs can ship with it instead of the stand.

Monitor arm, stand or wall mount — which one?

Same holes, different furniture. A desk-clamp arm frees the whole footprint and adjusts in every axis; a VESA stand is a drop-in replacement for a wobbly factory base; a wall mount clears the desk entirely but fixes the height. Whatever you pick, keep the monitor's weight within the mount's rating — arms typically list roughly 9–20 lb per screen.

Sources

Look your screen up in the verified monitor database. TV side of the standard: what VESA means, the per-model VESA checker, and the M4/M6/M8 screw guide.