Dell UltraSharp 40 Curved Thunderbolt Hub Monitor, 39.7" 5K WUHD IPS Display, 120Hz Refresh Rate, 5ms (Fast) Response Time, 2500R Curvature, 1.07B Color Support, White

Dell  UltraSharp 40 Curved Thunderbolt Hub Monitor, 39.7" 5K WUHD IPS Display, 120Hz Refresh Rate, 5ms (Fast) Response Time, 2500R Curvature, 1.07B Color Support, White

The Dell UltraSharp U4025QW is a premium 39.7″ 5K2K curved monitor with a built-in Thunderbolt 4 hub — designed for creators, professionals and power users who want ultra-wide screen space, excellent color, and seamless connectivity. Its 120 Hz refresh rate, HDR support, and high resolution make it ideal for both productivity and multimedia usage.

Key Features

• 5K2K Ultrawide Resolution: 5120 × 2160 at 120Hz gives expansive workspace with crisp detail. 
• Curved Display: 2500R curvature provides an immersive viewing experience. 
• IPS Black Panel: Uses Dell’s IPS Black technology for deep contrast (~2000:1) and wide viewing angles (178°). 
• High Brightness & HDR: 450 cd/m² typical, 600 cd/m² peak for HDR; supports VESA DisplayHDR 600. 
• Wide Colour Coverage: 99% DCI-P3, 100% sRGB, Display P3, and BT.709 — excellent for creative work.
• Built-In Hub & Power Delivery: Thunderbolt 4 upstream (140 W PD), plus 4 × USB-A, 2 × USB-C downstream ports, and a 2.5 GbE RJ45 port. 
• Flexible Connectivity: Includes HDMI 2.1, DisplayPort 1.4, Thunderbolt 4, and USB-C.
• Adjustable Stand: Height-adjust (150 mm), tilt (-5° to +21°), and swivel (-30°/+30°) for ergonomic comfort. 
• Eye Comfort Certified: 5-Star TÜV Eye Comfort rating, with ambient light sensor and ComfortView Plus (low blue-light) for reduced eye strain. 
• KVM & Picture-by-Picture: Supports KVM switching and splitting the screen into two 2560×2160 regions via iMST.
• Integrated Audio: Dual 9W stereo speakers for built-in sound. 

Technical Specifications

• Display Size: 39.7″ / 100.9 cm 
• Resolution / Refresh Rate: 5120 × 2160 @ 120 Hz 
• Panel Type: IPS Black 
• Contrast Ratio: 2000:1 (typical) 
• Response Time: 8 ms (Normal) / 5 ms (Fast) 
• Brightness: 450 cd/m² (typical) / 600 cd/m² (HDR peak) 
• Colour Gamut: 99% DCI-P3, 100% sRGB, 100% BT.709, Display P3 
• Colour Depth: 1.07 Billion (8-bit + A-FRC) 
• Connectivity:
  • 1 × HDMI 2.1 
  • 1 × DisplayPort 1.4 
  • 1 × Thunderbolt 4 (Upstream, 140 W PD) 
  • 1 × Thunderbolt 4 (Downstream, 15 W) for daisy-chaining 
  • 1 × USB-C 10 Gbps upstream
  • 4 × USB-A 10 Gbps downstream 
  • 2 × USB-C downstream (10 Gbps, 15 W) 
  • 1 × RJ-45 2.5 GbE Ethernet port 
  • 1 × 3.5 mm Audio Line-Out 
• Stand Features: Tilt, height, swivel, security-lock slot 
• VESA Mount: 100 × 100 mm 
• Power Delivery: Thunderbolt supports up to 140 W 
• Speakers: 2 × 9 W built-in 
• Ambient Light Sensor: Yes, for auto brightness & color adjustments 
• Eye Comfort: ComfortView Plus, low blue light ≤ 35% 

Ideal For

• Professionals who want a large, high-resolution ultrawide workspace for video editing, spreadsheets, and multitasking.
• Mac and Windows users who need a single-cable Thunderbolt solution with 140 W power delivery.
• Creative users who value accurate color (99% DCI-P3) and deep blacks with IPS Black panel.
• Users wanting a curved, immersive display without going to a gaming ultrawide.
• Hybrid setups – creators who also stream or game, thanks to the 120 Hz refresh rate.

Considerations

• 39.7″ is very large — make sure your desk depth can support its width (~94.7 cm). 
• To fully use 5120×2160 @ 120 Hz, your GPU or laptop must support high bandwidth via Thunderbolt or DisplayPort.
• HDR is supported, but not the highest tier — peak brightness isn’t as high as some true HDR-10 monitors.
• Because of the curved and wide format, text clarity might feel slightly different than on standard flat 4K monitors. Several users report slight softness in text. > “Text clarity is not as good … it has been causing eye strain.” 

Why Buy from IT Splendid – Your Trusted UAE Partner

• Genuine Dell Product: We supply authentic U4025QW units with warranty.
• Fast UAE-Wide Delivery: Ships to Dubai, Abu Dhabi, Sharjah & more.
• One-Cable Docking: Use the Thunderbolt 4 port to charge your laptop (up to 140 W) while driving the monitor and other USB-A / USB-C devices.
• Tailored Support: We help with color calibration, KVM usage, and initial setup.

The Dell UltraSharp 40″ U4025QW is a premium curved 5K monitor that combines exceptional screen real estate, rich color, high refresh rate, and a powerful Thunderbolt hub — ideal for creatives, professionals, and power users in the UAE.