Kenowa 23.8″ 2K 100Hz Portable Monitor Review
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Kenowa’s HD-238 stretches the idea of a portable monitor to 23.8 inches: a 2560×1440 IPS panel at 100Hz with FreeSync, 350 nits, 100% sRGB, a 1200:1 contrast ratio, a 2ms response time and a 178-degree viewing angle, in a matte body 9mm thick. It has USB-C and HDMI inputs, built-in speakers, a headphone jack, a stand that tilts through 90 degrees, and 75×75 VESA holes for a wall bracket or an arm. Kenowa quotes 2.3 kg, about 5 lb. What it does not have is any way to run without mains power: the 12V DC supply must be plugged in whichever input you use, and Kenowa says so twice. This is a monitor for moving between rooms and desks, not for a backpack, and Kenowa’s own listing tells you as much. 1-year warranty.
Key Specifications
| Specification | Detail |
|---|---|
| Screen Size | 23.8 inches, single panel |
| Resolution | 2560 x 1440 (QHD, 2K) |
| Panel Type | IPS, LED backlight |
| Refresh Rate | 100Hz |
| Response Time | 2ms |
| Adaptive Sync | FreeSync |
| Color Gamut | 100% sRGB |
| Contrast Ratio | 1200:1 |
| Brightness | 350 nits per the bullets (Amazon’s field says “350 lm”) |
| HDR | Not stated |
| Viewing Angle | 178° |
| Aspect Ratio | 16:9 (Amazon also lists 4:3, presumably an on-screen option) |
| Screen Finish | Matte |
| Speakers | Built-in |
| Audio Jack | 3.5mm |
| Ports | 1x USB-C 3.1 (signal only), 1x HDMI (signal only), DC power input |
| Power | 12V 3A DC supply, required for any use |
| Stand | Built-in, 90° tilt adjustment |
| VESA | 75 x 75mm; bracket not included |
| Thickness | 0.35″ / 9mm |
| Weight | 2.3 kg (about 5.1 lb) per Kenowa; Amazon’s field says 7.81 lb |
| Dimensions | 23.3 x 15.3 x 4.9 inches per Amazon |
| Compatible Devices | Laptop, PC, Mac, phone, Switch, PS4, PS5, Xbox |
| Model | HD-238 |
| Warranty | 1 year |
2K at 100Hz on a 23.8-Inch Panel
This is the size and resolution of a normal desktop monitor, and that is the point. 2560×1440 on 23.8 inches works out to about 123 pixels per inch, which is the density most people run a desk monitor at with no scaling, so Windows and macOS text is the right size out of the box and two full documents sit side by side. 100Hz is a clear step up from the 60Hz of ordinary portables: scrolling, window dragging and games all move more smoothly, and FreeSync keeps a game’s frame rate from tearing when it falls below the refresh rate. 2ms is quick enough that motion does not smear.
The picture numbers are better than the portable norm. 350 nits covers a bright office and a window seat, and the matte finish keeps reflections off a panel this large, which matters more here than on a 15-inch screen. 100% sRGB is full coverage of the web colour space, and Kenowa’s 1200:1 contrast ratio sits above the usual 1000:1, so dark scenes hold a little more depth. One note on the data: Amazon’s brightness field says “350 lm”, lumens rather than nits, while Kenowa’s bullet says 350 nits; the bullet is the sensible reading, since lumens is not how panel brightness is measured. HDR is not mentioned. For another Kenowa size, see the Kenowa Portable Monitor review.
Connectivity: Signal by USB-C or HDMI, Power by DC Only
| Port | Count | Function |
|---|---|---|
| USB-C 3.1 | 1 | Video and data from a full-featured USB-C port; no power |
| HDMI | 1 | Video from PCs, consoles and laptops; no power |
| DC Input | 1 | 12V 3A power supply, always required |
| 3.5mm Audio | 1 | Headphones or speakers |
Read the power line twice, because it is the thing that separates this monitor from the 15-inch class. The USB-C and HDMI ports carry the picture only. Neither will power the panel, so the 12V DC supply in the box has to be connected for the screen to come on at all, whether the source is a laptop or a PS5. Kenowa states this in two places on the listing. In practice it means a wall socket wherever the monitor goes, which is fine at a desk and a non-starter on a train.
For USB-C, the source port must be full-featured, USB-C 3.1 or higher with video output, or the laptop will not see the monitor. HDMI covers desktops, consoles and laptops without a video-capable USB-C port. Kenowa lists laptops, PCs, Macs, phones, the Switch, PS4, PS5 and Xbox; a Mac gets one external display here, so there is no base M-series problem. The HDMI and DisplayPort versions are not stated, so whether a console or laptop reaches the full 100Hz at 1440p depends on figures Kenowa does not give. Plug and play; no driver is mentioned or needed for a native display. For USB-C requirements, see our USB-C portable monitor guide.
Stand, Mounting and Size
The stand is built in and tilts through 90 degrees, which takes the panel from upright to nearly flat for a drawing tablet angle or an awkward shelf. Behind it are 75x75mm VESA holes, so the monitor can go on a wall bracket or a desk arm, though Kenowa does not include a bracket. At 9mm the panel is thinner than most desktop monitors, and Kenowa’s 2.3 kg is about half what a 24-inch desktop monitor with its stand weighs. Amazon’s field says 7.81 lb, which is most likely the boxed weight; Kenowa’s figure is the one to use for carrying.
Kenowa is candid about what portable means at this size. The listing says the monitor is light and easy to reposition compared with a desktop screen, not compact, and that it is not recommended for long-distance travel. Take that at face value. It is a desk monitor you can pick up and move to another desk, a hotel room by car, or a console setup in the living room, with a power socket at each end.
What’s in the Box
| Item | Quantity |
|---|---|
| 23.8″ Portable Monitor | 1 |
| DC Power Lead, 12V 3A | 1 |
| HDMI to HDMI Cable | 1 |
| USB-C to USB-C Cable | 1 |
| USB-A to USB-C Cable | 1 |
| Manual | 1 |
Drawbacks
| Consideration | Detail |
|---|---|
| Mains Power Always Required | USB-C and HDMI carry signal only; the 12V DC supply must be connected. |
| Not for Travel | Kenowa itself advises against long-distance travel at this size. |
| Weight Figures Disagree | 2.3 kg per Kenowa; 7.81 lb in Amazon’s field, most likely boxed. |
| Brightness Unit | Amazon’s field says lumens; Kenowa’s bullet says 350 nits. |
| HDMI and DisplayPort Versions Not Stated | Whether 1440p reaches 100Hz on a given source is not specified. |
| HDR Not Stated | No HDR claim on the listing. |
| VESA Bracket Not Included | 75×75 holes only. |
| Young Listing | Few reviews so far. |
Is This Monitor Right For You?
If you want a full-size 1440p 100Hz screen you can move between desks and consoles: Desktop resolution and refresh rate, FreeSync, speakers, a tilting stand and VESA holes, at about half the weight of a normal 24-inch monitor. Good for a home office that doubles as a games room, or a second desk you visit weekly. For a single 18.5-inch panel that is easier to carry, see the Epormot 18.5″ 120Hz review.
If you need a screen that runs off the laptop, fits a bag, or travels: This one needs a wall socket, measures 23.3 by 15.3 inches, and Kenowa says not to travel far with it. For lighter portables, our comparison pages cover the options.
Final Verdict
The Kenowa HD-238 is a desktop-class monitor in a portable’s body: 23.8 inches, 2560×1440, 100Hz with FreeSync, 350 nits, 100% sRGB, 1200:1, a 2ms response, speakers, a headphone jack, a 90-degree stand and VESA mounting, 9mm thick and about 2.3 kg. Those are the numbers of a good desk monitor, and the price sits below most of them.
The word portable needs qualifying, and Kenowa qualifies it. The screen must be plugged into mains power through its DC supply whatever the source, it is the size of a desktop monitor, and the listing advises against long trips. Buy it as a light, movable desk screen for a laptop, a PC or a console, and it is a strong one. Buy it expecting a big portable that runs off a USB-C cable, and it will disappoint. The unstated HDMI version and the disagreement over weight and brightness units are the listing’s loose ends.
Frequently Asked Questions
Can it run from the laptop’s USB-C cable alone?
No. The USB-C port carries video and data only. The 12V DC supply must be connected for the monitor to power on, with USB-C or with HDMI.
Is 350 lm the same as 350 nits?
No, lumens and nits measure different things, and Amazon’s field uses the wrong unit. Kenowa’s own bullet says 350 nits, which is the figure to go by.
Does it work with a PS5 or Xbox?
Yes, over HDMI, with the DC supply connected. Both consoles output 1440p. Kenowa does not state the HDMI version, so the refresh rate you get at 1440p is not confirmed.
Can I mount it on an arm?
Yes. It has 75x75mm VESA holes for a wall bracket or a monitor arm. No bracket is included.
Disclosure: As an Amazon Associate, I earn from qualifying purchases.
End of editorial review · Interactive tools below
FIELD TOOLSFIELD TOOLS
These six tools address the critical decisions every laptop screen extender buyer faces — physical fit, hinge safety, OS display limits, setup complexity, form factor selection, and travel readiness. Each tool is category-level: they work for any extender, not just the one reviewed above. Full buying guide →