Deco Gear VIEW401 40 Inch 5K UltraWide IPS Monitor with USB-C, 21:9 and 5120 x 2160 Resolution Review
A 40 inch 21:9 panel with broad colour coverage and plenty of ports for a one-screen desk
| Screen size | 40 inches |
|---|---|
| Resolution | 5120 x 2160 |
| Aspect ratio | 21:9 |
| Panel type | IPS |
| Colour coverage | 100% sRGB, 96% DCI-P3, 95% NTSC |
| Response time | 6ms with overdrive |
| Best for | Creators and multitaskers who want a very wide, colour-accurate screen in place of two monitors |
Product Overview
The Deco Gear VIEW401 is a 40 inch ultrawide monitor built around a 5120 x 2160 IPS panel in a 21:9 shape. That aspect ratio is wide enough to put two or three documents, spreadsheets or editing windows side by side, which is why people buy ultrawides in place of a pair of regular monitors.
The pitch is colour work. The listing quotes 100% sRGB, 96% DCI-P3 and 95% NTSC coverage, which are the figures that matter to photographers, videographers and designers who want the screen to show what they will deliver.
It is also meant for general productivity and some play. HDR10 support, Adaptive Sync and a 6ms response time with overdrive are listed, though the speed numbers are modest next to dedicated gaming displays.
Connectivity is generous, with DisplayPort 1.4, HDMI 2.0, USB-C and USB-A, so a laptop, desktop and console can all be hooked up. PIP and PBP modes let two sources share the screen.
Score Breakdown
This verdict is based on the manufacturer's stated specifications, the current Amazon listing and its product images, the confirmed materials and design, real buyer ratings, and our research into the product category. Scores are consistent editorial judgments, not laboratory measurements, and we did not receive a paid sample.
Key Features
5120 x 2160 pixels across a 40 inch 21:9 panel.
100% sRGB, 96% DCI-P3 and 95% NTSC on an IPS panel.
Show two input sources at once, side by side or inset.
Helps reduce screen tearing and stuttering.
Accepts HDR10 content for enhanced contrast.
DisplayPort 1.4, HDMI 2.0, USB-C and USB-A for several devices.
Design and Build Quality
The monitor is a 40 inch IPS panel. IPS is the panel type favoured for colour work because it keeps colour and contrast consistent across wide viewing angles, which matters on a screen this wide where the edges sit at a noticeable angle from the viewer.
The listed dimensions are 37.3 inches wide, 23.4 inches high and 12.1 inches deep. That is a large footprint, so measure your desk and check the depth of the stand before ordering.
The listing does not describe the stand's adjustability, so check whether it tilts or adjusts in height before relying on it. Buyers who want a monitor arm should confirm VESA support with the maker.
The 5120 x 2160 resolution is stated as 5K in the title. Spread across 40 inches it gives plenty of working space and sharp detail, though text will be smaller than on a similarly sized lower-resolution panel unless you scale it.
Performance in Everyday Use
Colour coverage is the highlight. The listing quotes 100% sRGB, 96% DCI-P3 and 95% NTSC, a spread that suits photo editing, video work and design where wide gamut matters. As with any maker figure, a calibration tool is the way to confirm accuracy for professional work.
The 21:9 shape and 5120 x 2160 resolution give a large workspace. PIP and PBP let you show two inputs at once, for example a laptop and a desktop, which is handy for people who switch between machines.
For motion, the listing states a 6ms response time with overdrive and support for Adaptive Sync to reduce tearing. The refresh rate is not given in the listing, so check it before buying if gaming is a priority.
HDR10 support is listed, but the listing does not give a brightness figure, so treat it as format support rather than a promise of strong HDR highlights.
Connectivity covers DisplayPort 1.4, HDMI 2.0, USB-C and USB-A, so a modern laptop can run over one USB-C cable while a desktop uses DisplayPort.
How It Performs: The Evidence
| Decision factor | What we found | Evidence and measurement | Score | Why it matters |
|---|---|---|---|---|
| Resolution | 5120 x 2160 | Resolution stated in the listing | 9.2 | Huge, sharp workspace |
| Colour coverage | 100% sRGB, 96% DCI-P3 | Coverage figures in the listing | 9.0 | Suits colour critical work |
| Connectivity | DP 1.4, HDMI 2.0, USB-C, USB-A | Port list in the listing | 8.8 | Works with laptops and desktops |
| Multi-source | PIP and PBP | Modes stated in the listing | 8.6 | Two computers on one screen |
| Response | 6ms with overdrive | Response time in the listing | 7.2 | Fine for casual play, slow for esports |
| HDR | HDR10 support | No brightness figure given | 7.0 | Support does not guarantee strong highlights |
| Footprint | 37.3 inches wide | Dimensions in the listing | 7.6 | Needs a wide desk |
Who Should Buy It
- Photographers and video editors
- Graphic designers
- Spreadsheet and multi-window users
- People replacing two monitors with one
- Laptop users who want USB-C
- Home office desks with enough width
- Fast-paced competitive gamers or anyone with a small desk
- Refresh rate is not stated in the listing
- 6ms response time is slow for competitive gaming
- No brightness figure given for HDR10 support
- Large 37.3 inch width needs a big desk
- Stand adjustability and VESA details are not described
Full Specifications
How It Compares
| Feature | Deco Gear | Typical option | Higher-tier option |
|---|---|---|---|
| Aspect ratio | 21:9 | Standard widescreen | Super ultrawide |
| Resolution | 5120 x 2160 | Full HD | Quad HD |
| Panel | IPS | VA | IPS |
| Colour coverage | 100% sRGB | Partial | Wide gamut |
| Response time | 6ms | Slower | Faster |
| Connectivity | USB-C, HDMI, DP | HDMI only | Similar |
Alternatives Worth a Look
The Deco Gear VIEW401 is a capable ultrawide for creators and multitaskers who want a huge, colour-rich workspace. The 5120 x 2160 IPS panel, wide colour coverage and USB-C connectivity are its strengths. Check the missing refresh rate and your desk space before ordering, and look elsewhere for competitive gaming.
Frequently Asked Questions
What resolution is it?
5120 x 2160 on a 40 inch 21:9 IPS panel.
Does it have USB-C?
Yes. Ports are DisplayPort 1.4, HDMI 2.0, USB-C and USB-A.
How good is the colour coverage?
The listing quotes 100% sRGB, 96% DCI-P3 and 95% NTSC.
Is it good for gaming?
It lists a 6ms response time with overdrive and Adaptive Sync, but no refresh rate, so it suits casual play more than competitive gaming.
Can I show two computers at once?
Yes. PIP and PBP modes let two sources share the screen.
Does it support HDR?
It supports HDR10, though the listing gives no brightness figure.
How wide is it?
The listed width is 37.3 inches, so check your desk space.
This review is based on the product listing, the manufacturer's stated specifications and our own category research on ultrawide monitors. It is not based on independent hands-on testing. Scores are editorial judgments built from the figures the listing provides, such as resolution, colour coverage and ports, and they should be read as a comparison against typical alternatives rather than as measured results.