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Key Features
- 42.51" 16:9 IPS Panel
- HDMI | DisplayPort | USB-C | RJ45
- USB-A | 3.5mm | Dual 8W Speakers
- UHD 4K 3840 x 2160 at 60 Hz
Increase your productivity using a display with multi-system connectivity, four unique Full HD partitions via iMST, ComfortView Plus, and more with the UltraSharp 42.51" 4K Monitor from Dell. This display features two DisplayPort 1.4 inputs, two HDMI 2.1 inputs, a USB-C input/output that supports DP 1.4, USB 3.2 Gen 2, and 90W of power delivery, three USB-C 3.2 Gen 2 inputs, a USB-C 3.2 Gen 2 input/output with 15W of charging power, four USB-A 3.2 Gen 2 ports, one of which supports 2A of charging power, a 3.5mm audio output, and an RJ45 network jack. All of this puts connectivity with almost any peripheral at your fingertips.
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Is the screen matte or glossy?
Is the screen matte or glossy?
The Dell UltraSharp 42.51" 4K Monitor, B&H # DEU4323QE, features a matte screen surface finish.
Date published: 2026-01-11
Is the bandwidth of the 2 HDMI 2.1 ports actually ...
Is the bandwidth of the 2 HDMI 2.1 ports actually 18gbps not 48gbps?
HDMI 2.1 has a bandwidth of 48Gbps.
Date published: 2023-06-12
Just wondering if this monitor can turn 90 ...
Just wondering if this monitor can turn 90 degrees for vertical operation?
The Dell UltraSharp 42.51" 4K Monitor cannot be rotated 90 degrees on the stock stand that is included with the monitor.
Date published: 2025-11-24
Can I use this monitor as a display for the ...
Can I use this monitor as a display for the output from my 2023 15" MacBook Air? If so, how would I connect the monitor?
Yes, this Dell UltraSharp 42.51" 4K Monitor is compatible with your 2023 15" MacBook Air via the inlcuded USB-C 3.2 Gen 2 to USB-C Cable (3.3').
Date published: 2023-09-22
Can this monitor be mounted on a heavy-duty desk ...
Can this monitor be mounted on a heavy-duty desk arm or wall mount?
Yes, the Dell UltraSharp U4323QE 42.51" 4K Monitor can be used with 100x100mm or 200x200mm VESA mounts.
Date published: 2024-03-28
What is the maximum playback rate?
What is the maximum playback rate?
The Dell UltraSharp 42.51" 4K Monitor has a 60hz refresh rate.
Date published: 2025-10-30
Is the screen glossy or matte?
Is the screen glossy or matte?
The Dell UltraSharp 42.51" 4K Monitor has an anti-glare coating, and it is more matte than glossy because of that.
Date published: 2026-03-24
How do you operate the RJ45 port on this monitor? ...
How do you operate the RJ45 port on this monitor? Thanks All.
The Dell UltraSharp 42.51" 4K Monitor BH #DEU4323QE can be used with both an Ethernet cable in the rj45 port and a USB cable to deliver internet to the computer.
Date published: 2023-05-31