# Sonnet Echo III Black Aluminium 400W 175mm x 424mm x 231mm

**URL:** https://aio.lv/en/product--sonnet-echo-3d-tb3--4485711
**Data updated:** 2026-01-07 09:58 (EET)
**Category:** I/O Adapters & Controllers
**Manufacturer:** Sonnet
**Manufacturer code:** ECHO-3D-TB3
**EAN:** 0732311013195
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 1 708.49 €
**Prices and availability valid until:** 2026-07-12 23:59
**Price without VAT (21%):** 1 411.98 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--sonnet-echo-3d-tb3--4485711

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 30.06.2026 | free |
| Pickup points | 03.07.2026 | 1.99 EUR |
| Courier delivery to door | 03.07.2026 | 4.99 EUR |

## Summary description

The Sonnet Echo III is a powerful Thunderbolt 3 expansion chassis designed for professional use. It features a sleek black aluminium housing, a robust 400W power supply, and compact dimensions of 175mm in width, 424mm in depth, and 231mm in height. Ideal for enhancing your workstation with additional connectivity options.

## Long description

The Sonnet Echo III Desktop is a Thunderbolt to PCIe expansion chassis that connects up to three full-length PCIe cards to a Mac, Windows, or Linux computer via a single Thunderbolt cable. Housed in a black aluminium enclosure and powered by an integrated 400W supply, the Echo III enables professional users to add capture, audio, networking, storage, and other specialty PCIe cards to portable, mini desktop, and all-in-one systems that lack internal PCIe slots.
Advantages
Echo III supports non-GPU PCIe cards across PCIe 4.0, 3.0, 2.0, and 1.1 standards and accepts up to three full-length (12.28-inch) cards simultaneously. The chassis provides a stable 400W power source and a compact footprint (175 mm x 424 mm x 231 mm) in a durable black aluminium body. It enables high-performance video capture and transcoding cards, audio DSP cards, SAS/SATA host adapters, high-speed Ethernet adapters, SSD storage cards, and other specialty expansions for systems that only offer Thunderbolt ports.
Suitable for
 Video capture, encoding and transcoding workflows
 Professional audio processing with DSP cards
 High-speed network connectivity (10Gb/25Gb Ethernet cards)
 External SSD and storage controller expansion (SAS/SATA)
 Workstations using compact or portable computers without PCIe slots
Key specifications
 Form factor: External Thunderbolt to PCIe expansion chassis
 PCIe slots: Up to three full-length (12.28 in) non-GPU PCIe cards
 PCIe compatibility: PCIe 4.0 / 3.0 / 2.0 / 1.1 (non-GPU cards)
 Power supply: 400W integrated
 Dimensions: 175 mm (W) x 424 mm (D) x 231 mm (H)
 Housing: Black aluminium
 Interface to host: Thunderbolt (Thunderbolt 3 / Thunderbolt 4 compatible hosts)
 Manufacturer model: Sonnet Echo III (ECHO-3D-TB3)
How to use
Install up to three supported full-length, non-GPU PCIe cards into the Echo III’s PCIe slots following the chassis user guide and secure them in place. Connect the Echo III to a compatible Mac, Windows, or Linux computer using the Thunderbolt cable, then connect AC power. After powering on the chassis and host computer, install any required drivers or software for the installed PCIe cards on the host system. Verify card recognition in the host operating system and configure card-specific settings as needed for your workflow.
Usage recommendations
Use the Echo III with non-GPU professional PCIe cards such as capture, audio DSP, network, and storage controller cards. Check card length and power requirements before installation, and consult Sonnet compatibility resources for specific card and host combinations. For optimal performance, use Thunderbolt 3 or Thunderbolt 4 ports on the host and keep firmware and drivers up to date.

## Specifications

| Feature | Value |
|---|---|
| Power supply | 400 W |
| Housing material | Aluminium |
| PCI Express x16 slots | 1 |

### Technical details

| Feature | Value |
|---|---|
| Warranty period | 2 year(s) |

### Ports & interfaces

| Feature | Value |
|---|---|
| Thunderbolt 3 ports quantity | 2 |

### Other features

| Feature | Value |
|---|---|
| Housing colour | Black |

### Weight & dimensions

| Feature | Value |
|---|---|
| Height | 231 mm |
| Width | 175 mm |
| Depth | 424 mm |

### System requirements

| Feature | Value |
|---|---|
| Windows operating systems supported | Y |
| Mac operating systems supported | Y |

### Packaging data

| Feature | Value |
|---|---|
| Power supply included | Yes |

## FAQ

### How much does the Sonnet Echo III Black Aluminium cost, and is it available for purchase?

The price is 1,708.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 6 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 30.06.2026 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, Leasing for legal entities. All transactions are 100% secure and encrypted.

### Can Sonnet Echo III Black Aluminium 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/4485711/60106134_large.webp