# Adapter Sonnet TB-DHDMI-21 Dual 4K HDMI adapter for dual-display HDMI output

**URL:** https://aio.lv/en/product--sonnet-tb-dhdmi-21--10994661
**Data updated:** 2026-02-13 15:46 (EET)
**Category:** Computer Component Accessories
**Manufacturer:** Sonnet
**Manufacturer code:** TB-DHDMI-21
**EAN:** 0732311013881
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 143.49 €
**Prices and availability valid until:** 2026-07-17 23:59
**Price without VAT (21%):** 118.59 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--sonnet-tb-dhdmi-21--10994661

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 06.07.2026 | free |
| Pickup points | 09.07.2026 | 1.99 EUR |
| Courier delivery to door | 09.07.2026 | 4.99 EUR |

## Summary description

The Sonnet TB-DHDMI-21 Dual 4K HDMI adapter provides dual HDMI output from a single compatible host connection. Designed to support two 4K HDMI displays, it enables multi-monitor setups for workstations, content creation, video playback and presentations. The adapter offers a compact, plug-and-play solution to extend or mirror screens, simplifying multi-display workflows and improving productivity.

## Long description

The Sonnet TB-DHDMI-21 Dual 4K HDMI adapter provides two HDMI outputs from a single compatible host port, enabling connection of two 4K HDMI displays. Designed for compact, plug-and-play operation, the adapter supports extended and mirrored display modes to facilitate multi-monitor setups for workstations, content creation, video playback and presentations. Its small footprint simplifies adding dual-screen capability without requiring internal upgrades or additional graphics cards.
Advantages
The adapter supports two simultaneous 4K HDMI outputs, allowing higher-resolution workflows across dual displays. Its plug-and-play design minimizes setup time and does not require additional drivers on most modern operating systems. The compact form factor reduces desk clutter and makes the adapter portable for mobile work. By using a single host connection to drive two displays, it reduces cable complexity compared with two independent adapters or internal installations.
Suitable for
Office workstations requiring extended desktop or mirrored presentations
Content creators who need dual 4K reference displays for video and photo editing
Video playback and media demonstration setups
Conference rooms and classroom environments for presentations
Key specifications
Dual HDMI outputs supporting up to 4K resolution on each display
Single compatible host connection required for dual-display operation
Supports extended and mirrored display modes
Compact, portable enclosure suitable for desktop and mobile use
How to use
Connect the adapter to a compatible host port on your computer or workstation, then attach two HDMI cables from the adapter to the respective displays. Power and recognition typically occur automatically on modern operating systems; configure display arrangement and resolution in the system display settings to set extended or mirrored modes and to adjust scaling or orientation as needed. Ensure connected displays are powered on and set to the correct HDMI input.
Usage recommendations
For best results, use high-quality HDMI cables rated for 4K bandwidth and verify that the host device supports dual-display output over the adapter interface. When working with color-critical content, calibrate each display individually and confirm resolution and refresh rate settings in the operating system.

## FAQ

### How much does the Sonnet TB-DHDMI-21 Dual 4K HDMI adapter cost, and is it available for purchase?

The price is 143.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 8 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 06.07.2026 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 Sonnet TB-DHDMI-21 Dual 4K HDMI adapter 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 Sonnet 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 Sonnet 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

## Image

https://aio.lv/img/cache/product/10994661/68523297_large.webp