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iiyama Prolite LH5575UHS-B1AG 55" specifications and in-depth review

iiyama Prolite LH5575UHS-B1AG 55"

Manufacturer: iiyama

The iiyama Prolite LH5575UHS-B1AG is a 55-inch large-format monitor built around an IPS LCD panel with LED backlighting, designed for professional display environments where screen real estate and viewing consistency matter. It carries a 3840 x 2160 resolution across a 54.6-inch active display area, delivering a pixel density of 80 ppi alongside wide 178-degree horizontal and vertical viewing angles. The panel features a matte, anti-glare surface and supports portrait mode orientation, giving it a degree of installation flexibility suited to various mounting scenarios via its VESA-compatible design.

On the technical side, the display runs at a 60Hz refresh rate with an 8ms response time and reaches a typical brightness of 500 nits, backed by a 1200:1 contrast ratio and a color output of 1.07 billion shades at 8-bit depth. Connectivity options are broad, covering three HDMI 2.0 ports, one DisplayPort 1.2 output, two USB ports, a 3.5mm audio jack, and Ethernet, with wireless networking supported through Wi-Fi 5 and Wi-Fi 4, as well as AirPlay. The unit integrates stereo speakers rated at 2 x 10W and draws 127W during operation, dropping to just 0.5W in standby, while carrying an EU energy label of G.

Pros
  • Three HDMI 2.0 ports and a DisplayPort 1.2 output provide a broad range of video input options for connecting multiple sources
  • Built-in Wi-Fi 5 and Ethernet support allow flexible network connectivity without relying on external adapters
  • AirPlay support enables wireless content sharing directly from compatible devices
  • Wide 178-degree viewing angles in both directions ensure consistent image quality from almost any position
  • The matte, anti-glare panel surface helps reduce reflections in varied lighting conditions
  • Supports portrait mode orientation and VESA mounting, offering meaningful installation flexibility
Cons
  • An EU energy label of G indicates relatively high energy consumption during regular use
  • The 60Hz refresh rate with no adaptive synchronization support limits suitability for fast-paced or dynamic content display
  • No remote control is included, requiring direct interaction with the unit for adjustments
  • Color calibration is not supported, which may be a drawback in environments where precise color accuracy is required
  • At 15,200 g, the unit is quite heavy, which may complicate installation or repositioning
  • The display is limited to 8-bit color depth with no Dolby or DTS audio format support, restricting advanced audio-visual capabilities
Who is this for?

This monitor is well suited to professional signage, corporate presentation environments, and large-format display installations where a 55-inch 4K IPS panel with wide 178-degree viewing angles can serve audiences from various positions. The inclusion of built-in Wi-Fi, Ethernet, and AirPlay makes it a practical fit for meeting rooms or public-facing display setups that benefit from wireless content delivery and networked management. Its VESA mount compatibility and portrait mode support also make it a reasonable choice for digital signage deployments requiring flexible physical orientation.

Who is this NOT for?

This monitor is not a good fit for gaming or fast-motion content display, as its 60Hz refresh rate and lack of adaptive synchronization technology make it poorly equipped for scenarios where smooth, tear-free motion is a priority. Users requiring precise color-accurate workflows such as professional photo editing or color grading will find the absence of color calibration support and the 8-bit panel depth limiting. Similarly, anyone needing a compact or easily repositioned screen will likely find its considerable weight and large footprint impractical for desk-based or frequently reconfigured setups.

Display:

Display type LED-backlit, LCD, IPS
response time 8 ms
screen size 54.6"
resolution 3840 x 2160 px
pixel density 80 ppi
Adaptive synchronization None
has anti-glare coating ✓
refresh rate 60Hz
maximum horizontal viewing angle 178º
maximum vertical viewing angle 178º
has a matte panel ✓
has a glossy panel ✕
has a touch screen ✕

The display uses LED-backlit LCD technology with an IPS panel spanning a 54.6-inch active screen area and a native resolution of 3840 x 2160 pixels, resulting in a pixel density of 80 ppi. It operates at a 60Hz refresh rate with an 8ms response time, and no adaptive synchronization technology is supported. Both horizontal and vertical viewing angles reach 178 degrees, ensuring consistent image quality across wide sightlines. The panel has a matte, anti-glare coating, meaning it does not have a glossy surface, and it does not include touch screen functionality.

General info:

Type Standard
EU energy label G
supports total tilt ✓
Has a swivel stand ✕
Supports VESA mount ✓
height 710 mm
width 1237 mm
thickness 55 mm
weight 15200 g
supports portrait mode ✓
maximum operating temperature 40 °C
lowest potential operating temperature 0 °C
volume 48304.85 cm³

This is a standard-type monitor with physical dimensions of 1237 mm wide, 710 mm tall, and 55 mm thick, with a total weight of 15,200 g. It supports tilt adjustment and portrait mode orientation, though it does not include a swivel stand. VESA mount compatibility is available for flexible installation options. The unit carries an EU energy label of G and is rated for operating temperatures between 0 °C and 40 °C.

Colors:

brightness (typical) 500 nits
supports color calibration ✕
display colors 1070 million
bit depth 8-bit
contrast ratio 1200:1

The display offers a typical brightness of 500 nits and a contrast ratio of 1200:1, contributing to its overall image rendering characteristics. It is capable of producing 1070 million colors at an 8-bit depth, covering a broad color range within those parameters. Color calibration is not supported on this unit.

Connectivity:

HDMI ports 3
supports Thunderbolt ✕
DisplayPort outputs 1
DisplayPort version DisplayPort 1.2
has a socket for a 3.5 mm audio jack ✓
has a DVI connector ✕
USB ports 2
Has USB Type-C ✕
HDMI version HDMI 2.0
supports Ethernet ✓
supports Wi-Fi ✓
Wi-Fi version Wi-Fi 5 (802.11ac), Wi-Fi 4 (802.11n)
has AirPlay ✓
mini DisplayPort outputs 0
has a VGA connector ✕

The monitor provides a well-rounded set of video inputs, including three HDMI 2.0 ports and one DisplayPort 1.2 output, while mini DisplayPort, DVI, and VGA connectors are absent. Thunderbolt and USB Type-C are not supported, but two standard USB ports and a 3.5mm audio jack are available. On the networking side, the unit supports Ethernet alongside wireless connectivity via Wi-Fi 5 (802.11ac) and Wi-Fi 4 (802.11n), and AirPlay is also built in.

Power:

operating power consumption 127W
standby power consumption 0.5W

During normal operation, the monitor draws 127W of power, while in standby mode consumption drops significantly to just 0.5W.

Features:

has PiP ✕
has stereo speakers ✓
has built-in smart TV ✕
audio output power 2 x 10W
has a remote control ✕
supports Dolby Digital ✕
supports Dolby Digital Plus ✕
has DTS Surround ✕
has an ambient light sensor ✕
has a front camera ✕

The monitor includes built-in stereo speakers rated at 2 x 10W, though it does not support Dolby Digital, Dolby Digital Plus, or DTS Surround audio formats. Picture-in-Picture is not available, and there is no built-in smart TV functionality, front camera, ambient light sensor, or remote control included.

Final Verdict

The iiyama Prolite LH5575UHS-B1AG is a large-format 55-inch 4K IPS monitor clearly positioned for professional display and signage applications rather than consumer or gaming use. Its strongest attributes lie in its comprehensive connectivity suite — spanning three HDMI 2.0 ports, DisplayPort 1.2, built-in Wi-Fi 5, Ethernet, and AirPlay — paired with wide 178-degree viewing angles and flexible mounting options that make it well-adapted to networked, multi-source display environments. That said, the 60Hz refresh rate, absence of adaptive synchronization, and lack of color calibration support mean it is best evaluated within the context of corporate, presentation, or signage deployments rather than precision creative or high-motion use cases. For organizations seeking a large, network-ready display with solid installation flexibility, the LH5575UHS-B1AG presents a coherent and purpose-driven specification set.