LG 24U421A Curved Monitor Review
A compact, curved VA panel with 100 Hz smoothness and USB-C video — great value if you’re tight on space.
Disclosure: As an Amazon Associate, we earn from qualifying purchases. This helps keep Gadget Geek Boy running at no extra cost to you.
Key features & who it’s for
- 24-inch FHD (1920×1080) curved VA panel — comfortable size for small desks.
- 100 Hz refresh and 5 ms response for smoother scrolling and UI motion than 60 Hz.
- 1500R curvature and ~99% sRGB (typ.) for everyday colour work and media.
- USB-C video (with up to ~15 W power delivery) plus HDMI input.
- Matte anti-glare finish and eye-comfort modes (Flicker Safe / Reader).
- Ideal as an affordable curved screen for home office, students, or coding & Pi projects.
Picture & curve
The 1500R curve draws your edges a touch closer without feeling extreme on a 24-inch panel. Text looks crisp at 1080p, colours are pleasing for general work and streaming, and the jump to 100 Hz keeps window dragging and page scrolls noticeably smoother than 60 Hz.
Ports & device pairing
- USB-C video is brilliant for a MacBook Air or USB-C iPad (DP Alt-Mode). The ~15 W PD is a trickle/top-up for laptops but fine for tablets/phones.
- Single HDMI: I pair multiple devices via a KVM switch so I don’t keep re-plugging.
- Raspberry Pi: use a good micro-HDMI → HDMI lead; set 1080p and enable higher refresh if you want up to 100 Hz where supported.
Pros & cons
| Pros | Cons |
|---|---|
| Great value curved screen with 100 Hz smoothness | Only 1× HDMI — a KVM or adapter may be needed for multiple devices |
| USB-C video simplifies iPad/MacBook connections | USB-C power delivery is ~15 W (top-up, not full laptop charging) |
| Comfortable 1500R curve; matte anti-glare | 1080p resolution — fine at 24″, but not for pixel-peepers |
FAQs
What ports does it have?
USB-C (display + up to ~15 W PD) and HDMI (single input).
Will USB-C charge my laptop?
It provides up to around 15 W — enough to maintain/slow-charge light laptops and charge tablets/phones. Use your main charger for full-speed laptop charging.
Does it work with Raspberry Pi?
Yes — use a micro-HDMI → HDMI cable. 1080p is the sweet spot; up to 100 Hz is available with compatible setups.
Is the stand height-adjustable?
It offers basic tilt adjustment. If you need height/pivot, pair with a VESA-compatible arm/stand.
Verdict
For the money, the LG 24U421A is a cracking little curved display. The 100 Hz refresh makes everyday computing feel snappier, the USB-C video is handy for modern devices, and while a single HDMI forced me onto a KVM, it’s an easy trade-off at this price.
