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Model: LG 20MK400H-B
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Display Size: 19.5 inches
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Panel Type: TN
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Resolution: HD+ (1366 × 768)
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Aspect Ratio: 16:9
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Brightness: 200 nits (typical)
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Refresh Rate: 60Hz
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Response Time: 2ms (GtG)
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Contrast Ratio: 600:1 (min.), 1000:1 (typ.)
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Viewing Angle: 90° (H) / 65° (V)
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Color Depth: 16.7 million colors
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Inputs: 1× HDMI, 1× D-Sub
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Features: AMD FreeSync™, Reader Mode, Flicker Safe, OnScreen Control
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VESA Mount Compatible: 75 × 75 mm
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Stand: Tilt adjustable
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Dimensions with Stand (W × H × D): Approx. 463.8 × 366.5 × 181.9 mm
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Weight with Stand: Approx. 2.3 kg
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Power Consumption: 13W (typical), <0.3W (standby)







lg Monitor Dynamic Action Sync
The LG 20MK400H-B is a 19.5″ HD+ (1366×768) LED TN monitor, ideal for budget-friendly daily use and casual gaming. Featuring a fast 2 ms (GtG) response time, 60–75 Hz refresh rate, HDMI & VGA inputs, plus Gaming tools like Dynamic Action Sync, Black Stabilizer, and Crosshair. Built-in Eye-care features (Reader Mode, Flicker Safe) and convenient joystick-driven OnScreen Control make it functional and ergonomic. Wall-mount ready with VESA support.
Features- Reader Mode
- Flicker Safe
- Dynamic Action Sync
- Black Stabilizer
- OnScreen Control
- Wall Mount
The LG 20MK400H-B is a compact and practical 19.5-inch HD monitor designed for users who need reliability and basic performance for everyday computing. With a 1366x768 resolution and a TN panel, it delivers clear images with fast response time, making it suitable for office tasks, internet browsing, and light multimedia use. It supports AMD FreeSync™ to reduce screen tearing and stuttering during fast motion, while features like Reader Mode and Flicker Safe enhance viewing comfort by minimizing eye strain. The monitor includes both HDMI and D-Sub ports for versatile connectivity and supports wall mounting via VESA compatibility. Its sleek, simple design makes it a great fit for home or office environments where space is a priority.
Protect Eyes with Reader Mode | Reducing blue light to help lessen eye fatigue, Reader Mode provides optimal condition for reading. With easy joystick control, you can more comfortably read your monitor screen. |
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Offers Stable Image | 'Reducing the flicker level to almost zero, Flicker Safe helps you protect your eyes from exhausting flickers. |
React Faster to The Action | Dynamic Action Sync mode allows you to instantly react to your opponents and attack them without any display lag. It synchronizes your senses with real-time scenes in fast-paced games by minimizing input lag. |
Enemies Have Nowhere to Hide | Black Stabilizer gives you full visual clarity, even in games where you spend a lot of time in the dark. It synchronizes and brightens the darkest areas, so that you can find enemies hiding in the shadows and shoot first. |
Easier User Interface | OnScreen Control is simple and intuitive. You can customize your display options with a few simple clicks. |
Convenient and Flexible | Mount the monitor to suit your work or entertainment set up. |