# AOC B3 U27B3A computer monitor 27" LCD 4K Ultra HD 3840 x 2160 pixels

**URL:** https://aio.lv/en/product--aoc-u27b3a--10945233
**Data updated:** 2025-12-30 14:56 (EET)
**Category:** Monitors
**Manufacturer:** AOC
**Manufacturer code:** U27B3A
**EAN:** 4038986181495
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 162.49 €
**Prices and availability valid until:** 2026-07-08 23:59
**Price without VAT (21%):** 134.29 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--aoc-u27b3a--10945233

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 08.07.2026 | free |
| Pickup points | 13.07.2026 | 1.99 EUR |
| Courier delivery to door | 13.07.2026 | 4.99 EUR |

## Summary description

The AOC B3 U27B3A is a 27-inch 4K Ultra HD LCD monitor with a resolution of 3840 x 2160 pixels. It features a fast response time of 4 ms and a native aspect ratio of 16:9, providing stunning visuals. With a wide viewing angle of 178° both horizontally and vertically, it ensures consistent image quality from various positions. The monitor also includes built-in speakers and supports VESA mounting for easy installation.

## Long description

The AOC U27B3A is a 27-inch 4K Ultra HD (3840 x 2160) LCD monitor designed for productivity. It uses an IPS panel to provide wide 178° viewing angles, a 60 Hz refresh rate and a 4 ms response time. The display supports HDR10 and Adaptive Sync for smoother, clearer visuals, includes a low blue light mode to reduce eye strain and has built-in 2 W speakers. The monitor features a slim three-sided frameless design, VESA mounting support and a flat black housing.
Advantages
This AOC monitor delivers high-resolution 4K clarity on a 27-inch screen with consistent colour and viewing angles thanks to its IPS panel. HDR10 support enhances contrast and colour depth, while Adaptive Sync minimises tearing during motion. A low blue light setting helps reduce visual fatigue during extended use, and integrated speakers provide basic audio without external devices. VESA compatibility offers flexible mounting options for different workstation setups.
Suitable for
Office productivity and multitasking with high-resolution workspace
Viewing and editing photos or detailed documents
Watching UHD video content with HDR10 support
General home or office use where a compact 27" 4K display is required
Key specifications
Display diagonal: 27"
Resolution: 3840 x 2160 (4K Ultra HD)
Panel type: IPS; Screen shape: Flat
Refresh rate: 60 Hz; Response time: 4 ms
Brightness: 350 cd/m² (typical); Contrast ratio: 1000:1 (typical)
HDR: HDR10; Adaptive Sync supported
Built-in speakers: Yes (2 W)
VESA mounting: Yes
Energy class (SDR/HDR): F / G
Colour: Black
How to use
Place and mount the monitor on a desk or install it on a VESA-compatible arm or bracket. Connect the video source using a compatible HDMI or DisplayPort cable (use the appropriate cable for 4K@60Hz if required). Adjust display settings via the on-screen menu to set resolution, enable HDR10, activate Adaptive Sync and switch on low blue light mode if needed. Use built-in speakers for basic audio or connect external speakers/headphones to the PC if higher audio quality is required.
Usage recommendations
For best image clarity at 4K resolution, ensure the connected device and cable support 4K at the desired refresh rate. Enable low blue light for long viewing sessions and calibrate brightness/colour settings when performing colour-critical work.

## Specifications

### Display

| Feature | Value |
|---|---|
| Display diagonal | 27 " |
| Display technology | LCD |
| HD type | 4K Ultra HD |
| Panel type | IPS |
| Display resolution | 3840 x 2160 |
| Response time | 4 ms |
| Contrast ratio (typical) | 1000:1 |
| Display brightness (typical) | 350 cd/m² |
| Viewing angle, vertical | 178 ° |
| Viewing angle, horizontal | 178 ° |
| Display diagonal (metric) | 68.5 cm |
| Contrast ratio (dynamic) | 20000000:1 |
| Native aspect ratio | 16:9 |
| Display number of colours | 1.073 billion colours |
| Backlight type | W-LED |
| Touchscreen | No |
| Anti-glare screen | Yes |
| Adobe RGB coverage | 107.2 % |
| LED backlight | Yes |
| NTSC coverage (typical) | 109 % |
| High Dynamic Range (HDR) supported | Yes |
| High Dynamic Range (HDR) technology | High Dynamic Range 10 (HDR10) |
| Surface hardness | 3H |
| BT.2020 coverage | 72.6 % |

### Design

| Feature | Value |
|---|---|
| Screen shape | Flat |
| Product colour | Black |
| Panel mounting interface | 100 x 100 |
| Market positioning | Home |
| Front bezel colour | Black |
| Frameless design | Yes |

### Ports & interfaces

| Feature | Value |
|---|---|
| HDMI ports quantity | 2 |
| DisplayPorts quantity | 1 |
| AC (power) in | Yes |
| Headphone out | Yes |
| Built-in USB hub | No |
| HDMI version | 2.0 |
| HDMI | Yes |
| Built-in KVM switch | No |
| DisplayPort version | 1.4 |

### Ergonomics

| Feature | Value |
|---|---|
| Tilt adjustment | Yes |
| Cable lock slot type | Kensington |
| VESA mounting | Yes |
| Adjustable height (max) | 110 mm |

### Audio

| Feature | Value |
|---|---|
| Built-in speaker(s) | Yes |

### Performance

| Feature | Value |
|---|---|
| sRGB coverage (typical) | 128 % |
| On Screen Display (OSD) | Yes |
| On Screen Display (OSD) languages | DEU, DUT, ENG, ESP, ITA, SWE, JPN, POL, POR, TUR, CHI (SIMPL), FIN, KOR, UKR, CHI (TR), FRE, RUS, CRO, CZE |
| Number of OSD languages | 19 |
| Flicker-free technology | Yes |
| Low Blue Light technology | Yes |
| VESA Adaptive Sync support | Yes |

### Multimedia

| Feature | Value |
|---|---|
| RMS rated power | 4 W |
| Number of speakers | 2 |

### Other features

| Feature | Value |
|---|---|
| Headphone outputs | 1 |
| Maximum refresh rate | 60 Hz |
| Input current | 1.5 |
| Headphone connectivity | 3.5 mm |
| Power supply type | Internal |
| Cable lock slot | Yes |
| Height adjustment | No |
| Tilt angle range | -5 - 20 |
| Weight (without stand) | 3590 g |
| Height (without stand) | 363.8 mm |
| Depth (without stand) | 45.7 mm |
| Introduction year | 2024 |
| Introduction month | June |
| Warranty period | 3 year(s) |

### Power

| Feature | Value |
|---|---|
| Energy efficiency class (SDR) | F |
| Energy efficiency class (HDR) | G |
| Energy consumption (SDR) per 1000 hours | 25 kWh |
| Energy consumption (HDR) per 1000 hours | 40 kWh |
| Power consumption (typical) | 27 W |
| Power consumption (off) | 0.3 W |
| Power consumption (standby) | 0.5 W |
| Power consumption (max) | 52 W |
| AC input frequency | 50/60 |
| AC input voltage | 100 - 240 |
| Energy efficiency scale | A to G |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight (with stand) | 4040 g |
| Width (with stand) | 614 mm |
| Height (with stand) | 460 mm |
| Depth (with stand) | 229.8 mm |
| Width (without stand) | 614 mm |

### Operational conditions

| Feature | Value |
|---|---|
| Operating altitude | 0 - 5000 |
| Operating relative humidity (H-H) | 10 - 85 |
| Storage temperature (T-T) | -25 - 55 |
| Operating temperature (T-T) | 0 - 40 |
| Storage relative humidity (H-H) | 5 - 93 |
| Non-operating altitude | 0 - 12192 |

### Packaging content

| Feature | Value |
|---|---|
| Cables included | AC, HDMI |
| HDMI cable length | 1.5 m |

### Packaging data

| Feature | Value |
|---|---|
| Package weight | 6620 g |
| Package depth | 142 mm |
| Package height | 453 mm |
| Package width | 690 mm |

## FAQ

### How much does the AOC B3 U27B3A computer monitor cost, and is it available for purchase?

The price is 162.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 73 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 08.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Cash payment, Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All AOC products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized AOC service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: display diagonal, display resolution, hd type, panel type, display technology, response time, contrast ratio (typical), display brightness (typical), screen shape, built-in usb hub, vesa mounting, built-in speaker(s), energy efficiency class (sdr), energy efficiency class (hdr), energy consumption (sdr) per 1000 hours, energy consumption (hdr) per 1000 hours, product colour, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

### Where can I download the instructions for AOC B3 U27B3A computer monitor?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.

## Image

https://aio.lv/img/cache/product/10945233/65395324_large.webp