A 31.5-inch 4K OLED gaming workspace
KOORUI S3241XO is a 31.5-inch UHD gaming monitor built around a 3840 × 2160 panel and a maximum 240Hz refresh rate. KOORUI’s US product page confirms the model, 31.5-inch size, OLED panel, UHD resolution and 240Hz ceiling. Some sellers describe it as a 32-inch class product, which is a rounded commercial size; the manufacturer page gives 31.5 inches. That distinction is useful when comparing desk dimensions or panel specifications. Its combination of high resolution and high refresh is intended for users who want fine image detail as well as responsive motion, although the computer must be able to render the selected 4K frame rate. The exact full model is S3241XO; do not confuse it with KOORUI’s similarly named S2721XO or other monitor families.
Panel type, resolution and image density
The product identity is anchored by the KOORUI S3241XO model number on the manufacturer page and the accompanying model specification document. The manufacturer’s US overview calls the panel OLED; KOORUI’s Pakistan regional store and multiple Bangladesh pages describe the same model as QD-OLED. The long-form description therefore identifies it as OLED and notes the QD-OLED naming used in regional listings instead of treating the two labels as independently confirmed panel construction. The native resolution is 3840 × 2160, commonly called 4K UHD, with a 16:9 aspect ratio. The manufacturer document lists a 31.5-inch screen and 0.1816mm pixel pitch. A 4K canvas can show detailed game environments, text and creative timelines, but operating system scaling may be useful for comfortable text size. Flat-screen geometry is listed for this model.
240Hz motion and response wording
A maximum 240Hz refresh rate can present up to 240 frames per second when the source supplies them and the chosen port mode supports them. The manual cautions that the achieved refresh rate depends on connection, cable, graphics hardware and display settings. For PC gaming, check the graphics card’s output and configure the S3241XO in the operating system’s advanced display settings. A high refresh panel does not make a game render faster by itself. The model document gives a 0.03ms overdrive (OD) response figure. Some local seller tables rewrite that as GTG. OD and GTG are not interchangeable test labels, so the description keeps the manufacturer document’s wording and avoids promising that every transition measures 0.03ms in all modes. KOORUI lists Adaptive Sync in the model document; exact compatibility and range should be checked with the connected source.
Color, brightness and HDR context
The S3241XO model document lists 1.07 billion display colors, 99% DCI-P3 gamut, a 1,500,000:1 static contrast ratio and 280 cd/m² brightness. KOORUI’s regional Pakistan listing also reports 280 cd/m² and 99% DCI-P3. Some Bangladesh retailer tables instead show 250 cd/m² and 98% DCI-P3. Because published market specifications conflict, verify the precise regional unit and its box label with the seller rather than treating the different values as measurements of one identical batch. The manual labels the HDR mode “HDR True Black 400.” HDR appearance depends on the source, mastering, operating-system configuration and selected picture mode; the label alone does not establish every peak-brightness behavior or a guaranteed certification for each region. Check the on-screen information and regional compliance label if HDR certification is a purchase requirement.
USB-C, video inputs and device sharing
The model specification document lists two HDMI 2.1 inputs, one DisplayPort 1.4 input, one USB-C connection rated at 90W, two USB-A 3.1 ports, one USB-B connection and one audio output. The manual’s OSD instructions include a Type-C input and a PD setting, supporting a USB-C video/charging workflow on compatible equipment. A single cable only replaces other connections when the laptop’s USB-C port carries video and accepts the monitor’s power profile; confirm those details in the laptop manual. The USB-B upstream path may be needed to activate the USB hub or KVM with a separate video connection. The monitor’s OSD has a KVM setting and picture-in-picture/picture-by-picture controls. Follow the supplied diagram when connecting multiple systems, because the display path and USB data path may use different leads.
Stand, desk fit and mounting
The model manual lists height adjustment of 110mm, tilt from 5 degrees forward to 20 degrees backward, horizontal swivel of ±20 degrees, and rotation of ±90 degrees. It supports a 100 × 100mm VESA mount and has a security slot. Published dimensions are 719 × 592 × 226mm with the stand and 719 × 417 × 57mm without it; the stand base is listed as 225 × 226mm. The manual gives net weight as 8.30kg with stand and 5.70kg without, plus 11.70kg packaged. Measure the desk depth and stand footprint before placing it beside speakers, a laptop dock or a second monitor. If using a monitor arm, check both its VESA plate and weight capacity. Keep room behind the screen for the stand, cables and external power adapter.
OLED care, audio and everyday controls
The supplied model document lists a rear ambient-light effect, eye-care feature, preset modes, PIP/PBP and panel-care controls including pixel shift, logo-brightness adjustment and pixel refresh. These are settings to use according to the manual; do not repeatedly run panel refresh procedures outside the recommended guidance. OLED is capable of per-pixel light control, but prolonged static interface elements can still call for sensible screen-saver, sleep and brightness habits. The model specification says there are no integrated speakers. It lists an audio output, so users should plan for headphones or external desktop speakers. The OSD includes source selection, color temperature, volume control for output, user adjustments, gaming presets and power delivery configuration. Available controls and menu labels may vary with firmware and regional variant.
Power, accessories and local purchase checks
The model document lists a 24V, 11A external power input and maximum operating consumption of 264W, with standby at no more than 0.5W. It lists an adapter, power cord, stand parts, HDMI cable, DisplayPort cable, Type-C cable, USB cable and user/installation manuals; the seller carton should be checked because regional bundle contents can vary. Current Bangladesh retailer pages checked on 6 November 2026 showed prices around ৳146,000–৳148,000. BiponiBD’s configured variant price of ৳148,000 is retained and is not represented as a confirmed third-party shop offer. Local retailer pages advertise different warranty terms. Ask the seller for the named distributor, dead-pixel threshold, OLED burn-in coverage, claim location and included cables in writing. The product’s regional part suffix, GTIN/barcode and manufacturing origin for the BiponiBD unit remain unverified.
Key features
- A 31.5-inch OLED panel and 3840 × 2160 UHD resolution give a large 16:9 desktop canvas for games, films and multi-window work.
- The manufacturer specification document lists a maximum refresh rate of 240Hz; the selected mode depends on the graphics source, connection, cable and settings.
- The S3241XO specification sheet lists a 0.03ms overdrive response figure, 1.07 billion display colors and 99% DCI-P3 coverage.
- The product manual lists HDR True Black 400 and Adaptive Sync; HDR and variable refresh behavior still depend on the source and software.
- Connections documented for this model include two HDMI 2.1 inputs, one DisplayPort 1.4, USB-C with up to 90W power delivery, USB-A ports and USB-B upstream.
- The USB-C input can carry a supported video signal and provide charging to compatible devices; confirm the host, cable and selected monitor mode before relying on one-cable use.
- The stand provides 110mm height adjustment, tilt, swivel and portrait rotation; the monitor also lists 100 × 100mm VESA mounting.
- The manual describes picture-in-picture, picture-by-picture, KVM controls, panel care functions and rear ambient lighting; check the OSD guide for setup.
Advantages
- 4K resolution on a large 31.5-inch OLED screen gives detailed desktop space and pixel-level contrast.
- A 240Hz maximum refresh rate can display high-frame-rate motion smoothly when the computer can drive the mode.
- The model combines a high refresh rate with a wide-gamut 10-bit color specification and HDR True Black 400 labeling.
- USB-C with up to 90W PD, USB hub, KVM and PIP/PBP can simplify a compatible mixed-device desk.
- The adjustable stand, portrait pivot and VESA mounting give multiple placement options.
Things to consider
- Driving 4K at 240Hz requires a capable GPU, connection and cable; not every console, laptop, dock or adapter can output that mode.
- OLED screens can retain or wear unevenly with prolonged static content; use the model’s panel-care features and follow the manual.
- Bangladesh retailer pages disagree on some specifications, including brightness and gamut; compare the carton/model and ask the seller to confirm the exact unit.
- The manual lists no built-in speakers, so desktop audio needs headphones or external speakers.
- Local warranty terms, OLED burn-in/dead-pixel coverage and accessories vary by seller/import batch and should be confirmed in writing.
Frequently asked questions
What is the exact model and screen size?
The model is KOORUI S3241XO. KOORUI’s US page lists a 31.5-inch screen; several Bangladesh listings round it to the 32-inch class.
What resolution and refresh rate does it support?
The manufacturer specification document lists 3840 × 2160 UHD and up to 240Hz. The available mode depends on the graphics hardware, input, cable and display settings.
Is the panel OLED or QD-OLED?
KOORUI’s US product page calls it OLED. KOORUI’s regional Pakistan page and Bangladesh retailer listings describe the same S3241XO as QD-OLED. Confirm the exact market variant from the carton and seller.
What is the response time?
The model specification document lists 0.03ms (OD, overdrive). Some Bangladesh listings label this GTG; use the manual’s OD wording unless the unit documentation confirms a GTG claim.
What are the brightness and color specifications?
The model document lists 280 cd/m² brightness, 1.07 billion colors and 99% DCI-P3. Some local retailer tables show 250 cd/m² and 98% DCI-P3, so verify which regional specification applies to the supplied unit.
Does it support HDR?
The model manual labels HDR True Black 400. The public KOORUI US overview does not list a certification, so verify the exact certification mark on the unit or its regional support material.
What ports are included?
The model document lists two HDMI 2.1, one DisplayPort 1.4, one USB-C rated up to 90W, two USB-A 3.1, one USB-B upstream and one audio output. Retailer port tables may be incomplete or inconsistent.
Can USB-C charge a laptop?
The S3241XO document lists USB-C Type-C at 90W. Video/data and charging depend on the laptop port, cable and monitor configuration; check the laptop’s charging requirements.
Does it have built-in speakers?
The model specification document says there are no built-in speakers. It lists an audio output for connecting external audio equipment.
What stand adjustments and mounting does it offer?
The model document lists 110mm height adjustment, tilt from −5° to +20°, swivel ±20°, pivot ±90° and 100 × 100mm VESA support.
What is the warranty in Bangladesh?
Bangladesh sellers advertise differing warranty terms, commonly three years on current listing pages. That is a seller claim, not a confirmed KOORUI Bangladesh policy; check the written warranty card and OLED panel coverage.
What is the current Bangladesh price?
On the retailer pages checked 6 November 2026, Skyland showed ৳147,900, Ryans ৳148,000, Tech Land BD ৳148,000 and Ultra Technology about ৳146,000. These are dated seller snapshots, not guaranteed live offers; the BiponiBD configured ৳148,000 remains separate.
