HP 21Y56AT

Expert reviews. One COR Score.

HP P34hc G4 WQHD USB-C Curved Monitor reviews

Brand: HP More HP monitors reviews →

HP P34hc G4 WQHD USB-C Curved Monitor
Pictured: 21Y56AT · Image supplied through Icecat.
tbd

COR Score

Available after 3 critic reviews

No scored critic reviews yet

Compare HP P34hc G4 WQHD USB-C Curved Monitor reviews, specifications and available UK retailer offers. Check the details for this exact model and follow the original critics’ findings.

Manufacturer code21Y56AT

The product, explained

About the HP P34hc G4 WQHD USB-C Curved Monitor

HP 21Y56AT is listed in the computer monitors category. The recorded specifications include display diagonal: 86.4 cm (34"); display resolution: 3440 x 1440 pixels; panel type: VA; maximum refresh rate: 60 Hz. This entry covers manufacturer code 21Y56AT. Specifications relate to this exact source record; other editions or packages may differ.

The 86.4 cm (34") display is specified at 3440 x 1440 pixels. Consider these together: a larger screen provides more physical space, while resolution determines the number of pixels available. Neither specification establishes brightness, colour accuracy or motion quality.

The listed maximum refresh rate is 60 Hz. To use it, the source device, cable, resolution and input must all support the intended mode. Refresh rate is separate from response time and input lag.

Screen size
86.4 cm (34")
Screen resolution
3440 x 1440 pixels
Panel type
VA
Maximum refresh rate
60 Hz
Response time
5 ms
Display brightness (typical)
250 cd/m²

Make it work for you

Before choosing the HP P34hc G4 WQHD USB-C Curved Monitor

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Independent perspectives

Expert reviews 0

How we calculate the score →

Independent ratings, converted to the same five-point scale. Each card links to the original review and identifies the available evidence.

No scored critic reviews have been imported for this exact product yet. It remains unrated.

Independent reviews, made comparable

What does the COR Score mean?

One consistent scale makes different publishers’ ratings easier to compare. The original review still tells you why a critic reached that verdict.

Read our scoring methodology →

Scale conversion · example

8/ 104.00/ 5

An illustration of conversion, not this product’s rating.

  1. Check the match

    Identify the exact model and the version reviewed. Check the manufacturer code, configuration and supplied accessories.

  2. Compare on one scale

    Convert usable ratings to five points, count each publisher once and give each critic equal weight.

  3. Require three critics

    Show the average to two decimal places after three distinct critics. Otherwise display tbd, keeping individual reviews visible.

Find the best fit by considering the score alongside the critic count, review dates, tested version and the strengths that matter to you. Eligible model-level reviews identify the tested configuration. Reviews of different hardware are shown separately and do not enter this product’s COR Score.

Know exactly what you’re buying

HP P34hc G4 WQHD USB-C Curved Monitor specifications

Manufacturer code: 21Y56AT · Icecat product 87989793 · Checked 21 Sep 2026. Specifications belong to this exact model.

Key specifications

The main features to compare for this exact model. Missing details are not assumed.

HP P34hc G4 WQHD USB-C Curved Monitor — key specifications
Screen size86.4 cm (34")
Screen resolution3440 x 1440 pixels
Panel typeVA
Maximum refresh rate60 Hz
Response time5 ms
Display brightness (typical)250 cd/m²
HDMI ports1
DisplayPort connections1

More product specifications

Open a section for the details that matter to you.

Audio & listening4 details
HP P34hc G4 WQHD USB-C Curved Monitor — Audio & listening
Number of speakers2
Built-in speakersYes
Built-in microphoneNo
Headphone outYes
Display13 details
HP P34hc G4 WQHD USB-C Curved Monitor — Display
Display technologyLED
TouchscreenNo
Anti-glare screenYes
Screen shapeCurved
Contrast ratio (typical)3000:1
Contrast ratio (dynamic)5000000:1
Viewing angle, horizontal178°
Viewing angle, vertical178°
Display number of colours16.7 million colours
Display diagonal (metric)86.4 cm
Colour gamut standardNTSC
Colour gamut85%
On Screen Display (OSD)Yes
Processor, memory & storage2 details
HP P34hc G4 WQHD USB-C Curved Monitor — Processor, memory & storage
Supported graphics resolutions640 x 480 (VGA), 800 x 600 (SVGA), 1024 x 768 (XGA), 1280 x 1024 (SXGA), 1280 x 720 (HD 720), 1280 x 800 (WXGA), 1440 x 900 (WXGA+), 1600 x 900, 1680 x 1050 (WSXGA+), 1920 x 1080 (HD 1080), 1920 x 1200 (WUXGA), 3440 x 1440
Storage relative humidity (H-H)20 - 80%
Camera, image & video1 detail
HP P34hc G4 WQHD USB-C Curved Monitor — Camera, image & video
Built-in cameraNo
Connections & wireless9 details
HP P34hc G4 WQHD USB-C Curved Monitor — Connections & wireless
Built-in USB hubYes
USB upstream port typeUSB Type-C
Number of USB Type-B upstream ports quantity1
USB Type-A downstream ports quantity4
DVI portNo
HDMIYes
HDMI version2.0
DisplayPort version1.2
Panel mounting interface100 x 100 mm
Power & battery10 details
HP P34hc G4 WQHD USB-C Curved Monitor — Power & battery
Energy efficiency class (SDR)G
Energy efficiency class (HDR)G
Energy consumption (SDR) per 1000 hours32 kWh
Power consumption (typical)48 W
Power consumption (standby)0.5 W
Power consumption (max)190 W
AC input voltage100 - 240 V
AC input frequency50 - 60 Hz
Power supply typeInternal
Supplied AC adapter type195122737436
Controls & features1 detail
HP P34hc G4 WQHD USB-C Curved Monitor — Controls & features
Operating temperature (T-T)5 - 35 °C
Design & dimensions16 details
HP P34hc G4 WQHD USB-C Curved Monitor — Design & dimensions
Colour depth8 bit
Product colourBlack
VESA mountingYes
Height adjustmentYes
Width (with stand)809.4 mm
Depth (with stand)234.9 mm
Height (with stand)518 mm
Weight (with stand)10.5 kg
Width (without stand)809.4 mm
Depth (without stand)112.1 mm
Height (without stand)366.9 mm
Sustainable technologies and materialsArsenic-free display glass; Low halogen; Mercury-free display backlights; TCO Certified; TCO Certified Edge
Weight10.5 kg
Height366.9 mm
Width809.4 mm
Depth112.1 mm
Software & compatibility2 details
HP P34hc G4 WQHD USB-C Curved Monitor — Software & compatibility
Bundled softwareHP Display Center
CertificationBIS; CB; CCC; CE; CEL; cTUVus; EAC; EPA; FCC; GS Mark; ISO 9241-307; KC/KCC; NOM; RCM; VCCI; WEEE; CEL Grade 3; WW application; ICE
Further product details21 details
HP P34hc G4 WQHD USB-C Curved Monitor — Further product details
HD typeWide Quad HD
Native aspect ratio21:9
Aspect ratio21:9
Pixel pitch0.231 x 0.231 mm
Pixel density110 ppi
Viewable size, horizontal33.4 cm
Viewable size, vertical79.7 cm
Surface hardness3H
Flicker-free technologyYes
Low Blue Light technologyYes
HP segmentBusiness
Market positioningBusiness
Detachable standYes
HDCPYes
Cable lock slotYes
Tilt adjustmentYes
Tilt angle range-5 - 21°
Operating relative humidity (H-H)5 - 95%
Stand includedYes
Quick start guideYes
Sustainability certificatesENERGY STAR
Packaging & supplied accessories7 details
HP P34hc G4 WQHD USB-C Curved Monitor — Packaging & supplied accessories
Package width950 mm
Package depth225 mm
Package height480 mm
Package weight16.7 kg
Package typeBox
Country of originChina
Harmonized System (HS) code85285210

Specifications describe the supplied product data, not measured review results. Battery life, range and performance figures are source claims and can vary with use.

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Your questions, answered

HP P34hc G4 WQHD USB-C Curved Monitor FAQs

How many expert reviews are available for HP P34hc G4 WQHD USB-C Curved Monitor?

No scored critic reviews have been imported for this product yet. This means review coverage is missing; it does not mean the product received a poor review.

What is the COR Score for HP P34hc G4 WQHD USB-C Curved Monitor?

The COR Score is tbd. We publish a combined score only after at least three distinct critics have usable ratings. Any individual reviews already available remain visible.

Which exact version does this page cover?

This page identifies HP P34hc G4 WQHD USB-C Curved Monitor using manufacturer code 21Y56AT. Check that code, configuration and supplied accessories against the retailer listing. Related-version reviews are labelled separately and do not contribute to this version’s score.

What is the listed display diagonal for HP P34hc G4 WQHD USB-C Curved Monitor?

The source specification records display diagonal as 86.4 cm (34"). This is a specification, not an independent performance measurement. Check the exact model and the original critic reviews for real-world results.

What is the listed display resolution for HP P34hc G4 WQHD USB-C Curved Monitor?

The source specification records display resolution as 3440 x 1440 pixels. This is a specification, not an independent performance measurement. Check the exact model and the original critic reviews for real-world results.

Where can I compare prices for HP P34hc G4 WQHD USB-C Curved Monitor?

Use the retailer-offer section on this page for available matched offers. If no offer is shown, we do not currently have a verified price. Confirm model, stock, delivery and the final total at the retailer; coverage does not include every seller.

Does a higher refresh rate make every app better?

It can make movement feel smoother, but benefits depend on the computer, connection and the activity.

Can I use a USB-C monitor with any laptop?

Not necessarily. Check the laptop port supports the required display mode and charging level.

Is a curved monitor always more immersive?

It depends on size, desk distance and use. Try it for text and multi-window work, not only video.

How should I use the specifications alongside reviews?

Use the recorded features to check compatibility and make a shortlist. Read the original reviews for measured performance, everyday use and the tested configuration.

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