Dell UltraSharp U4021QW: High-resolution monitor as a Thunderbolt docking station


In the run-up to the virtual CES 2021, Dell has announced a range of new business monitors, including the high-end UltraSharp U4021QW. As the third display, it has the highest 21: 9 resolution to date of 5120 × 2160 pixels – the first of the three monitors on a diagonal of 40 inches (39.7 inches).

A factory-calibrated IPS panel is used, which should have a maximum Delta-E color deviation of 2 in sRGB mode. The latter color space the UltraSharp U4021QW completely covers, DCI-P3 to 98 percent. The display shows 1.07 billion colors, but Dell does not reveal whether this is done using real 10-bit processing per color channel or Frame Rate Control (FRC).

The refresh rate is 60 Hertz, the brightness is 300 cd / m² and the contrast is 1000: 1, which is typical for IPS. With a response time of 5 ms at normal overdrive setting, the monitor is one of the rather slow representatives of its kind.

The UltraSharp U4021QW comes with numerous connections so that it can be used as a docking station – for example on a Note- or MacBook with a Thunderbolt 3 connection. The latter can be used to transmit DisplayPort 1.4 image signals and data, and the monitor can also charge a connected device with up to 90 watts.

(Image: Dell)

Also on board: six USB 3.2 Gen 2 (10 GBit / s), including a Type-C connection, audio jack and an RJ45 Ethernet port. If the connected PC cannot handle Thunderbolt 3, the hub can be operated to a limited extent via a USB type B port. The display then receives the image signal via DisplayPort 1.4 or limited to 30 Hertz via HDMI 2.0. Two integrated 9 watt speakers complete the equipment.

In terms of price, the UltraSharp U4021QW has it all: Dell recommends 2100 US dollars, including 19 percent VAT (not included in US prices) around 2040 euros. Deliveries are scheduled to begin at the end of January 2021. Some other announced UltraSharp monitors like the U3821DW are cheaper for 1500 US dollars, but with a lower resolution (here 3840 × 1600 pixels) and without Thunderbolt 3. LG’s 34WK95U with 5120 × 2160 pixels and Thunderbolt 3 is available from just under 1000 euros.


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