MSI MAG401QR 40" UWQHD 155Hz IPS Gaming Monitor
PRODUCT DESCRIPTION
MSI MAG401QR 40" UWQHD 155Hz IPS Gaming Monitor
Key specifications: 40" · UWQHD · IPS · 155Hz · 1ms(MPRT) · 4ms(GtG) · FreeSync Premium · HDR400 · 2x HDMI2.0 · DP1.4a · USB-C 65W · KVM
Width Matters
The ultrawide 3440x1440 resolution with a 21:9 aspect ratio gives a wider field of view for gaming.
This Is Color
IPS panel that produces no image distortion and minimum color shifts when viewed from different angles.
155Hz Refresh Rate + 1ms Response Time
High refresh rate and fast response time benefit competitive genres such as shooters and racing sims.
Tear Free, Stutter Free Fluid Gaming
AMD FreeSync Premium technology delivers tear-free, stutter-free gameplay.
KVM
Control multiple devices via one set of joystick, keyboard, mouse, and MSI gaming monitor.
Universal Type-C Connection
USB Type-C carries display signal and charges devices at up to 65W.
MSI MAG401QR Datasheet — Technical Specifications
General
| Product Name | MSI MAG401QR 40" UWQHD 155Hz IPS Gaming Monitor |
| Model | MAG401QR |
| MSI Part Number | 9S6-3EA54H-007 |
| EAN | 4711377131254 |
| Brand / Series | MSI MAG / MPG Gaming Monitors |
Display
| Panel Size | 40" (101.6 cm) |
| Active Display Area (mm) | 926.22(H)x387.72(V) |
| Curvature | Flat |
| Panel Type | IPS |
| Panel Resolution | 3440x1440 (UWQHD) |
| Pixel Pitch (H x V) | 0.2697(H)x0.2697(V) |
| Aspect Ratio | 21:9 |
| Brightness (nits) | 400 (Typ.), 400 (HDR peak) |
| Contrast Ratio | 1000:1 |
| DCR | 100000000:1 |
| Signal Frequency | 30~160 KHz(H) / 60~144 Hz(V) |
| Activated Range | 48~155Hz |
| Refresh Rate | 155Hz |
| Response time | 1ms (MPRT) |
| Dynamic Refresh Rate Technology | AMD FreeSync™ Premium |
| HDR Support | VESA DisplayHDR 400 |
| Viewing Angle | 178° (H) / 178° (V) |
| Adobe RGB / DCI-P3 / sRGB | 90% / 94% / 118% |
| Surface Treatment | Anti-glare |
| Display Colors | 1.07B (8 bits + FRC) |
| Frameless Design | Yes |
Connectivity & Features
| Video ports | 2 x HDMI™ (Supports 3440x1440@100Hz as specified in HDMI™ 2.0b); 1 x DisplayPort (Supports 3440x1440@155Hz as specified in DisplayPort 1.4a); 1 x Type-C (DP alt. with PD 65W) |
| USB ports | 2 x USB 2.0 Type-A; 1 x USB 2.0 Type-B Upstream; 1 x USB 2.0 Type-C (PD 65W) |
| Audio ports | 1x Headphone out |
| Control | 5-Way Navigator Joystick |
| Console Mode | 2K Resolution PS5™ Optimization; FHD @ 120Hz |
| PIP / PBP Function | Yes |
| Note | DisplayPort: 3440X1440 (Up to 155Hz); Type-C: 3440 x 1440 (Up to 155Hz); HDMI™: 3440 x 1440 (Up to 100Hz); Adobe RGB, DCI-P3 and sRGB follow CIE1976 Standard |
Ergonomics & Mounting
| Adjustment (Tilt) | -5° ~ 20° |
| Kensington Lock | Yes |
| VESA Mounting | 100x100mm |
Power
| Power Type | Power Cable |
| Power Input | 100~240V, 50/60Hz |
Dimensions & Weight
| Weight (NW / GW) | 10.3 kg / 12.4 kg; 8 kg (Without stand) |
| Dimension (W x D x H) | 945.22 x 289.63 x 530.29 mm / 945.22 x 83.32 x 416.12 mm (without stand) |
Specifications are as published by MSI and may change without notice — see the MSI product page for the latest details.
Compatibility & Connectivity
Video Inputs
2 x HDMI™ (Supports 3440x1440@100Hz as specified in HDMI™ 2.0b); 1 x DisplayPort (Supports 3440x1440@155Hz as specified in DisplayPort 1.4a); 1 x Type-C (DP alt. with PD 65W)
USB
2 x USB 2.0 Type-A; 1 x USB 2.0 Type-B Upstream; 1 x USB 2.0 Type-C (PD 65W)
Audio
1x Headphone out
Supported Modes (MSI note)
DisplayPort: 3440X1440 (Up to 155Hz); Type-C: 3440 x 1440 (Up to 155Hz); HDMI™: 3440 x 1440 (Up to 100Hz); Adobe RGB, DCI-P3 and sRGB follow CIE1976 Standard
Console Mode
2K Resolution PS5™ Optimization; FHD @ 120Hz
Mounting
VESA 100x100mm — fits standard VESA monitor arms; check the arm's weight rating against the monitor weight in the datasheet.
Package Contents & MSI MAG / MPG Gaming Monitors Ordering Information
In the Box
MAG401QR with mounting hardware and quick guide, as packed by MSI.
MSI MAG / MPG Gaming Monitors
| Model | Key feature |
| MAG401QR (this listing) | 40" / UWQHD / IPS / 155Hz / 1ms(MPRT) |
| MAG 342CQRF E20 | 34" / UWQHD / Curved 1500R / Rapid VA / 200Hz |
| MAG 325QF E18V | 31.5" / WQHD / Rapid VA / 180Hz / 1ms(MPRT) |
| MAG 321CQF E18 | 31.5" / WQHD / Curved 1500R / Rapid VA / 180Hz |
| MAG 322URDF E16 | 31.5" / Dual-Mode FHD-320Hz & UHD-160Hz / Rapid IPS / 1ms(MPRT) / 0.5ms(GtG) |
| MAG 321CUPDF | 31.5" / Dual-Mode FHD-320Hz & UHD-160Hz / Curved 1500R / Rapid VA / 1ms(MPRT) |
| MAG 271KPD7 | 27" / Dual-Mode WQHD-300Hz & 5K UHD-75Hz / Rapid IPS / 0.5ms(MPRT) / 0.5ms(GtG) |
| MPG 274URDFW E16M | 27" / Dual-Mode FHD-320Hz & UHD-160Hz / Rapid IPS / Mini-LED / 1ms(MPRT) |
| MAG 274QPF X30MV | 27" / WQHD / Rapid VA / 300Hz / Mini-LED |
| MAG 275UPD E14 | 27" / Dual-Mode FHD-288Hz & UHD-144Hz / Rapid IPS / 1ms(MPRT) / 0.5ms(GtG) |
| MAG 274QRFW X32 | 27" / WQHD / Rapid IPS / 320Hz / 1ms(MPRT) |
| MAG 274QPF E20 | 27" / WQHD / Rapid IPS / 200Hz / 1ms(MPRT) |
| MAG 274QF X24 | 27" / WQHD / Rapid IPS / 240Hz / 1ms(MPRT) |
| MAG 274F | 27" / FHD / Rapid IPS / 200Hz / 1ms(MPRT) |
| MAG 255F X24 | 24.5" / FHD / Rapid IPS / 240Hz / 1ms(MPRT) |
Datasheet & Downloads
| MSI product page | MAG401QR on msi.com |
| Specifications | MAG401QR specifications |
| Drivers, manuals & firmware | MAG401QR support |
Frequently Asked Questions — MSI MAG401QR
What resolution and refresh rate does the MAG401QR support?
Resolution: 3440x1440 (UWQHD). Refresh rate: 155Hz (per MSI specification).
Can it charge a laptop over USB-C?
Yes, the USB-C port supplies up to 65W power delivery, so one cable can carry video, data and charging.
Is the stand height-adjustable?
No, the stand tilts only (-5° ~ 20°). Use the VESA mount with a monitor arm for height adjustment.
Does it have built-in speakers?
No, connect headphones or external speakers.
Does it support KVM?
Yes, the built-in KVM lets you control two connected computers with one keyboard and mouse.
What warranty do I get?
Singapore local MSI warranty through the authorised distributor. Supplied by SourceIT with a GST invoice.