Best Monitor Arms 2026: Ergotron, Amazon, and Fully Jarvis Tested

Monitor arms replace fixed monitor stands, placing your display at the correct ergonomic height and freeing the desk space that the stock stand occupied. The ergonomic case is strong: the free-standing stand that ships with most monitors places the screen too low for sitting ergonomics and often cannot be raised enough without risking stability.

Why Stock Monitor Stands Fail Ergonomically

Stock monitor stands adjust height in a limited range — typically 4-6 inches. For many users, this range tops out with the screen still too low. The problem compounds with desk height variations.

Correct screen position: top of screen at or slightly below eye level. For a user with seated eye height 43 inches at a 30-inch desk, the top of a 27-inch monitor (screen height approximately 24cm / 9.5 inches) should sit at approximately 13 inches above desk level. Stock stands rarely achieve this.

A monitor arm raises any monitor to any height within its adjustment range, solves the problem permanently, and gains approximately 8-12 inches of previously occupied desk depth back.

Spring Arms vs Bolt-Adjustable Arms

Spring arms (Ergotron LX, Fully Jarvis): use a spring mechanism to counterbalance the monitor's weight. You set the spring tension for your monitor's weight and can freely reposition the arm with one hand. Repositioning takes one second. Downside: spring must be tuned to the monitor's weight — too loose and the arm drifts downward; too tight and it floats upward.

Bolt-adjustable arms (most budget arms): use a friction joint tightened with a tool. Setting height requires loosening the bolt, repositioning, re-tightening. Not practical for frequent repositioning but fine for set-and-forget setups.

For users who frequently adjust monitor height (sit-stand desk users): spring arms only. For users who set the height once and leave it: bolt-adjustable is adequate.

Cable Management: Internal vs External

Internal cable routing (Ergotron LX, Ergotron MX): cables run inside the arm from monitor to desk. From the front, cables are completely hidden.

External clips (budget arms, VIVO): cables clip along the outside of the arm. Functional but visible.

The internal routing difference is aesthetic and cleanliness-focused, not functional. If a clean desk appearance matters: internal routing is worth the premium. If function matters more than appearance: external clip cable management works.

VESA Compatibility

VESA is the mounting standard that connects monitor to arm. Before buying a monitor arm, confirm your monitor is VESA compatible and identify the hole pattern:

• VESA 75x75: holes in a 75mm x 75mm square (most 24-inch and smaller monitors)
• VESA 100x100: holes in a 100mm x 100mm square (most 27-inch and larger monitors)
• Some monitors: VESA 200x100 or other non-standard patterns (check spec sheet)

Most monitors include VESA compatibility in their spec sheet. Monitors without VESA mounting (some iMacs, some all-in-ones) cannot use standard monitor arms without an adapter.

Desk Thickness and Mount Method

Monitor arms mount via C-clamp (clamps to desk edge, no drilling) or grommet mount (fits through a pre-drilled hole in desk).

C-clamp: works on desks up to 4 inches thick typically. Check the arm's spec for maximum desk thickness. Most home desks (24mm / 1 inch MDF or solid wood) work with any standard clamp.

Grommet: requires a hole. Some standing desks (Uplift, Fully Jarvis) include grommet holes. Some users prefer the cleaner appearance as the arm pole goes through the desk rather than clamping the edge.

Ergotron LX includes both C-clamp and grommet mounting hardware. Most budget arms include only C-clamp.

Weight Capacity and Monitor Size

Monitor arm weight limits are the spec to check before buying. Most standard arms support 9-11kg (20-25 lbs). Most 27-32 inch monitors weigh 4-8kg — well within this range.

Exceptions:

• 34-inch ultrawides: some reach 9-10kg, check spec
• 38-inch curved monitors: often 9-12kg, require a heavy-duty arm
• 45+ inch monitors: not appropriate for standard single-arm; use a dedicated heavy-duty arm

Ergotron LX (supports 11.3kg) handles 34-inch ultrawides. Amazon Basics (9kg) covers most 27-inch monitors.