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ASUS PA278QV vs LG 34WR55QK-B: Match Your Layout and Connections

Choose ASUS PA278QV for a narrower, portrait-capable screen or three to four direct USB peripheral connections. Choose LG 34WR55QK-B for a wider 3440-column landscape desktop or two direct HDMI inputs, accepting the wider chassis and two downstream USB sockets. Both retain 1440 native rows in landscape.

Published by Pickoryx · Published 2026-10-13

Source checked 2026-10-13 16:56 UTC

Products compared

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The buying question

Should you choose the narrower, portrait-capable ASUS or the wider LG, and does either have enough direct connections for your devices?

ASUS offers supplied portrait rotation and more downstream USB sockets; LG offers a wider native landscape grid and an additional HDMI input.

Quick verdict

Choose ASUS ProArt PA278QV if

  • You want the supplied stand to rotate into portrait and 2560 × 1440 landscape is enough.
  • Three or four compatible USB peripherals must connect directly at the monitor.
View ASUS ProArt PA278QV on AmazonPaid link

Choose LG 34WR55QK-B.AUS if

  • You require 3440 horizontal native pixels and have room for the wider monitor.
  • Two HDMI sources need their own monitor inputs, with USB peripherals handled by two sockets or additional connections elsewhere.
View LG 34WR55QK-B.AUS on AmazonPaid link
When to skip: You require both 3440 landscape columns and four built-in downstream USB sockets without extra connection hardware.
When the recommendation changes
  • If your peripherals already connect elsewhere, choose primarily by native layout and physical fit.
  • If you need both the ultrawide grid and three or four USB devices, include separate host ports or a suitable hub in the LG setup.
  • If portrait rotation is mandatory with the supplied stand, choose ASUS rather than expecting that adjustment from LG.

The differences that matter

Native Desktop Layout And Supplied Orientation

ASUS ProArt PA278QV

27-inch 2560 × 1440. The supplied stand pivots into portrait and adjusts in height. ASUS estimates the assembled landscape width at 24.21 inches and depth at 8.90 inches, with regional variation.[1, 2]

LG 34WR55QK-B.AUS

34-inch 3440 × 1440. LG lists the supplied stand adjustments as Tilt/Height, without pivot. Approximate assembled width is 31.9 inches and depth 10.2 inches.[3]

What this changes: Both have 1440 native pixel rows in landscape; LG adds horizontal columns, not more vertical rows. Choose ASUS for supplied portrait rotation or the narrower chassis; choose LG for a required 3440-column landscape grid if the wider unit fits. Compare actual app scaling and leave room for cables; these dimensions are not a fit guarantee.[1, 2, 3]

The better fit depends on your priorities

Source And Peripheral Connection Count

ASUS ProArt PA278QV

Four USB 3.2 Gen 1 Type-A downstream sockets and one HDMI input. DisplayPort, Mini DisplayPort and DVI inputs are also listed.[1]

LG 34WR55QK-B.AUS

Two USB 3.0 downstream sockets and two HDMI inputs. DisplayPort and USB-C are also listed.[3]

What this changes: If either screen layout works, three or four compatible USB peripherals favor ASUS for direct monitor-side connections. LG needs another connection point for more than two such devices. Two sources that must each plug directly into HDMI favor LG instead. Port counts do not establish simultaneous display, automatic peripheral switching or device compatibility.[1, 3]

The better fit depends on your priorities

Best for your routine

Supplied portrait rotation and a narrower landscape chassis

Best fit: ASUS ProArt PA278QV

Based on listed features, not comparative testing.

ASUS documents pivot and a smaller assembled width. The compromise is fewer native horizontal pixels when used in landscape.

View ASUS ProArt PA278QV on AmazonPaid link

A native 3440-column landscape desktop with peripheral connections already handled

Best fit: LG 34WR55QK-B.AUS

Based on listed features, not comparative testing.

LG meets that pixel-grid requirement; ASUS does not. Check the wider physical fit and app scaling before choosing it.

View LG 34WR55QK-B.AUS on AmazonPaid link

Three or four compatible USB devices connected directly at the monitor

Best fit: ASUS ProArt PA278QV

Based on listed features, not comparative testing.

ASUS has four downstream sockets. Enable them with its documented upstream cable; LG has only two direct downstream connections.

View ASUS ProArt PA278QV on AmazonPaid link

Two sources that each require a direct HDMI input

Best fit: LG 34WR55QK-B.AUS

Based on listed features, not comparative testing.

LG has two HDMI inputs versus ASUS’s one. This is an input-count choice, not a promise to share USB devices between the sources.

View LG 34WR55QK-B.AUS on AmazonPaid link

Value and trade-offs

One or both observed offers have eligibility conditions, so no unrestricted price difference is shown.

Compare the complete setup rather than the monitor price alone. If LG costs more, its wider native grid or second HDMI input should matter to you; if ASUS costs more, supplied portrait rotation or additional direct USB sockets should matter. Include any separately needed hub or input adapter in your comparison.

There is insufficient verified price history for a buy-now or wait recommendation.

Limitations

  • This is a manufacturer-specification comparison, not a hands-on test of image quality, productivity, gaming, comfort or reliability.
  • Native pixels do not establish how much usable app content you will see at your chosen scaling. Confirm the intended resolution through your computer, cable and any adapter.
  • Dimensions are manufacturer estimates or approximate figures. Check clearance for cables and adjustment, and confirm the exact US model before ordering.
  • Socket counts alone do not verify USB power, bandwidth, operating-system support or multi-computer peripheral sharing. The LG USB-C listing is not universal host compatibility.

Questions shoppers ask

What if I want the LG layout but have four USB peripherals?

Choose the LG only with a plan for the extra connections: it has two downstream sockets, so the remaining devices need suitable host ports or a separately chosen hub. If every device must plug directly into the monitor, neither model combines four downstream sockets with the LG’s native landscape grid.

Does the larger LG give me more native vertical pixels?

No. In landscape, both specify 1440 rows; LG increases the horizontal count from 2560 to 3440. That does not by itself prove more usable app space at your preferred scaling. ASUS adds the option to rotate its supplied stand into portrait.

Methodology and sources

Compared native landscape pixel grids, supplied portrait adjustment, approximate assembled dimensions, HDMI input counts and downstream USB connections. Recommendations describe feature fit rather than measured superiority.

AI helped organize the documented differences and check consistency. Pickoryx did not test either monitor hands-on.

View 3 sources
  1. 1.ASUS ProArt Display PA278QV US technical specificationsASUS USA · Official specifications · Source checked 2026-10-13
    Evidence used on this page
    • Display lines 20–30; I/O Ports lines 67–72; Mechanical Design lines 87–91; estimated regional dimensions lines 95–98: PA278QV: 27-inch 2560 × 1440, supplied pivot and height adjustment, estimated 24.21-inch width and 8.90-inch depth, four USB-A downstream ports and one HDMI input.
  2. 2.ASUS PA278QV / PA278QEV Series LCD Monitor User GuideASUS · Official specifications · Source checked 2026-10-13 10:17 UTC
    Evidence used on this page
    • Printed 1-4 / PDF page 14: port directions; printed 2-3 / PDF page 17: pivot; printed 2-4 / PDF page 18: separate video and USB upstream cables: Applicable PA278QV manual documents portrait rotation and the Type-B upstream cable that enables its Type-A peripheral ports; video uses a separate display cable.
  3. 3.LG 34WR55QK-B.AUS Specification SheetLG Electronics USA (document hosted by Best Buy) · Official specifications · Source checked 2026-10-13
    Evidence used on this page
    • Page 1: exact .AUS model heading; PICTURE QUALITY screen size and resolution; INPUT/OUTPUT HDMI and USB downstream counts, USB-C data; DIMENSIONS / WEIGHTS with stand; complete STAND adjustment field: LG-authored US 34WR55QK-B.AUS sheet: 34-inch 3440 × 1440, approximate 31.9-inch width and 10.2-inch depth, Tilt/Height stand, two HDMI inputs, two downstream USB 3.0 sockets, USB-C data transmission.

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