C34J791WTW - Screen SAMSUNG - Free user manual and instructions
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| Product Type | Monitor |
| Model | C34J791WTW |
| Display Diagonal | 34 inches |
| Panel Type | VA (Vertical Alignment) |
| Resolution | 3440 x 1440 (UWQHD) |
| Aspect Ratio | 21:9 |
| Refresh Rate | 100 Hz |
| Curvature | 1500R |
| Brightness | 300 cd/m² |
| Contrast Ratio | 3000:1 (Static) |
| Response Time | 4 ms (GtG) |
| Viewing Angles | 178° / 178° |
| Color Support | 16.7 million colors |
| FreeSync | Yes (AMD FreeSync) |
| Built-in Speakers | No |
| Connections | HDMI 2.0, DisplayPort 1.4, USB-C (with 60W PD), 2x USB 3.0 downstream |
| USB-C Power Delivery | Up to 60 W |
| Height Adjustment | 0 to 120 mm |
| Tilt | -2° to 20° |
| VESA Mounting | 100 x 100 mm |
| Energy Class | B |
| Power Consumption (Typical) | 50 W |
| Dimensions (with Stand) WxHxD | 807.9 x 456.6 x 252.1 mm |
| Weight (with Stand) | 7.6 kg |
| Manual Languages | English (EN) |
Frequently Asked Questions - C34J791WTW SAMSUNG
How do I clean the screen?
Unplug the monitor and use a soft, dry microfiber cloth. For stubborn smudges, slightly dampen the cloth with distilled water (no alcohol or ammonia). Wipe gently in circular motions.
How do I adjust the monitor height and tilt?
Grasp the monitor firmly and adjust the height by pushing down or pulling up on the top edge. Tilt the screen forward or backward by applying gentle pressure to the top or bottom of the bezel.
Does this monitor support VESA mounting?
Yes, it uses a standard 100 x 100 mm VESA pattern. Use M4 screws (not included) and a compatible mount.
How can I enable AMD FreeSync?
Connect the monitor via DisplayPort or HDMI (ensure HDMI supports VRR). Go to the OSD menu under Game > FreeSync and set it to On. Also enable FreeSync in your AMD graphics driver.
What should I do if the screen flickers?
First, check the cable connection. Try a different cable (especially DP). Verify that the refresh rate is set correctly in display settings. If using FreeSync, try turning it off temporarily. Also disable any overclocking.
How do I use Picture-by-Picture (PBP) mode?
Connect two sources (e.g., HDMI and USB-C). Press the joystick button to open the OSD. Go to OnScreen Display > PBP and select On. Choose the source for each side.
What is the maximum resolution and refresh rate?
The native resolution is 3440 x 1440 at 100 Hz. For 100 Hz, use DisplayPort or USB-C; HDMI may be limited to lower refresh rates.
How do I reset the monitor to factory settings?
Open the OSD by pressing the joystick. Navigate to System > Reset and confirm. The screen will briefly turn off and restore all defaults.
Can I charge a laptop via USB-C?
Yes, the USB-C port provides up to 60 W power delivery, suitable for most ultrabooks. Ensure your laptop supports USB-C charging.
How long is the warranty?
Standard warranty varies by region, typically 3 years from date of purchase. Check Samsung’s website or your invoice for specific terms.
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