# Keyboard A4Tech B820R — Full-size mechanical gaming keyboard, USB, RGB backlight, black

**URL:** https://aio.lv/en/product--a4tech-b820r--4635495
**Data updated:** 2026-03-27 13:34 (EET)
**Category:** Keyboards
**Manufacturer:** A4Tech
**Manufacturer code:** B820R
**EAN:** 4711421926928
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 102.49 €
**Prices and availability valid until:** 2026-07-21 23:59
**Price without VAT (21%):** 84.70 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--a4tech-b820r--4635495

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 10.07.2026 | free |
| Pickup points | 15.07.2026 | 1.89 EUR |
| Courier delivery to door | 15.07.2026 | 4.99 EUR |

## Summary description

A4Tech B820R is a full-size (100%) wired mechanical gaming keyboard with USB interface and RGB LED backlight. It features a straight layout and mechanical key switches suited for gaming, offering tactile feedback and durability. Designed for desktop use, it supports fast input for games, typing and content creation in black finish.

## Long description

A4Tech B820R is a full-size (100%) wired mechanical gaming keyboard with a USB interface and customizable RGB LED backlight in a black finish. It uses LK optic mechanical switches with a 3 mm travel distance and an ultra-fast 0.2 ms key response, combining tactile mechanical feel and optical actuation for faster, more reliable input. The top panel is made of gunmetal aluminum alloy, and the keyboard includes full N-key rollover, spill-resistant nano-coating on the PCB and a smart water flow system for drainage. The straight layout and durable construction make this keyboard suitable for desktop gaming, fast typing and content creation.
Advantages
The LK optic switches provide near-zero digital latency and a 0.2 ms response time, offering faster actuation compared with traditional metal-contact switches. With a 3 mm travel distance, keystrokes register up to 25% faster than switches with longer travel. The switches are specified for a lifespan exceeding 100 million actuations, while the gunmetal aluminum alloy top panel increases structural strength and corrosion resistance. Full N-key rollover ensures simultaneous multi-key input is recognised, and the external USB connection provides plug-and-play compatibility. Built-in RGB options include six preloaded effects and three customizable animation modes with 16.8 million color options, and lighting presets can be stored to quick-access slots without additional software.
Suitable for
PC desktop gaming where low input latency and multi-key press recognition are required
Fast typing and content creation that benefit from tactile mechanical feedback
Esports and competitive play requiring durable switches and reliable actuation
Users who want customizable RGB lighting without installing drivers
Key specifications
Form factor: Full-size (100%) wired keyboard
Interface: USB
Switch type: LK optic mechanical switch
Key travel: 3 mm actuation distance
Key response time: 0.2 ms
Switch lifetime: over 100 million keystrokes
Backlight: RGB with 16.8 million colors, 6 preloaded effects and 3 customizable animation modes
Anti-ghosting: Full N-key rollover (NKRO)
Top panel material: Gunmetal aluminum alloy
Protection: Spill-resistant nano-coating on PCB and smart water flow drainage
Layout: Straight full-size layout with standard key arrangement
How to use
Connect the keyboard to a computer using the USB cable and allow the system to recognise the device; no additional driver installation is required for basic functions and lighting presets. Use the FN key combinations described in the user guide to cycle through the six preloaded lighting effects or to access the three customizable animation modes. Store custom lighting animations into the onboard slots by saving to FN+0 through FN+9 as supported, and use the standard keys for typing and gaming with full N-key rollover active. Keep the keyboard on a flat, stable surface to maintain the straight layout ergonomics.
Usage recommendations
To protect the keyboard and extend its service life, avoid exposing it to direct liquid spills; the nano-coating and smart water flow system provide added protection but are not a substitute for careful handling. Clean the aluminum top panel with a soft, dry or slightly damp cloth; avoid aggressive solvents. For optimal performance in competitive gaming, use the keyboard on a stable desk and verify FN-based lighting presets before important sessions.

## Specifications

### Keyboard

| Feature | Value |
|---|---|
| Device interface | USB |
| Keyboard form factor | Full-size (100%) |
| Pointing device | No |
| Windows keys | Yes |
| Numeric keypad | Yes |
| Connectivity technology | Wired |
| Recommended usage | Gaming |
| Multimedia keys | Yes |
| Keyboard keys operating life | 100 million characters |

### Mouse

| Feature | Value |
|---|---|
| Mouse included | No |

### Design

| Feature | Value |
|---|---|
| Product colour | Black |
| Backlight colour | Multicolour |
| Backlight | Yes |
| Backlight type | RGB LED |
| Adjustable backlight | Yes |
| Wrist rest | No |
| Keyboard style | Straight |

### Weight & dimensions

| Feature | Value |
|---|---|
| Keyboard dimensions (WxDxH) | 445 x 132 x 37 |

### Power

| Feature | Value |
|---|---|
| Power source type | USB |

### Packaging content

| Feature | Value |
|---|---|
| Number of products included | 1 pc(s) |

## FAQ

### How much does the A4Tech B820R mechanical gaming keyboard cost, and is it available for purchase?

The price is 102.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 4 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 10.07.2026 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: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can A4Tech B820R mechanical gaming keyboard be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### 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 A4Tech 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 A4Tech 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: device interface, keyboard form factor, mouse included, 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.

## Image

https://aio.lv/img/cache/product/4635495/64315005_large.webp