# External PCIe Expansion Chassis Sonnet Echo III Silver Steel 1 — Steel housing, Silver, 400 W PSU

**URL:** https://aio.lv/en/product--sonnet-so-echo-3r-tb3--12051308
**Data updated:** 2026-03-12 19:34 (EET)
**Category:** I/O Adapters & Controllers
**Manufacturer:** Sonnet
**Manufacturer code:** SO-ECHO-3R-TB3
**EAN:** 732311013201
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 2 132.49 €
**Prices and availability valid until:** 2026-07-18 23:59
**Price without VAT (21%):** 1 762.39 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--sonnet-so-echo-3r-tb3--12051308

## 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 | 1.99 EUR |
| Courier delivery to door | 15.07.2026 | 4.99 EUR |

## Summary description

Sonnet Echo III Silver Steel 1 is an external PCIe expansion chassis with a steel silver housing and an integrated 400 W power supply. Designed to house PCIe cards externally, it provides power and slot connectivity for graphics, capture, and accelerator cards, enabling desktop or laptop systems to use full‑height PCIe expansion for professional audio/video, editing, and compute workflows.

## Long description

Sonnet Echo III Silver Steel 1 is an external PCIe expansion chassis in a silver steel housing with an integrated 400 W power supply. It provides three PCIe slots (one x16 and two x8) and a Thunderbolt interface to connect up to three full‑height, single‑width PCIe cards or a combination of one double‑width and one single‑width card to a computer with Thunderbolt 3 or Thunderbolt 4 ports. The chassis supplies auxiliary power to installed cards, supports automatic power on/off with the host computer, and includes a Thunderbolt cable and a Sonnet ThunderLok 3 connector retainer.
Advantages
The Echo III Rackmount supports a wide range of non‑GPU PCIe cards including video capture, audio DSP, host bus adapters, Ethernet, and storage controllers, enabling professional audio/video, editing, and compute workflows without modifying the host system. Built with a rugged 2U steel enclosure and quiet cooling (Noctua fans rated at 17 dBA), it combines durability and low noise for studio and rack environments. Dual Thunderbolt ports provide a 40 Gbps interface with the ability to daisy‑chain peripherals while the integrated 400 W power supply and 75 W auxiliary power capability deliver stable power for multiple expansion cards.
Suitable for
Connecting video capture and transcoding cards for professional post‑production
Adding audio DSP or Pro Tools / HDX compatible cards to a Thunderbolt‑equipped system
Installing high‑performance network or storage controller cards (10Gb/25Gb Ethernet, SAS/SATA host bus adapters)
Extending PCIe capability for compact desktops, mini PCs, and laptops
Key specifications
Enclosure: Steel 2U rackmount housing, silver finish
PCIe slots: Three slots (one x16, two x8); supports up to three full‑height, single‑width cards or one double‑width plus one single‑width card
Power supply: Integrated 400 W power supply with 75 W auxiliary power support
Interface: Thunderbolt 3 / Thunderbolt 4 compatible, 40 Gbps throughput
Thunderbolt ports: Two ports (one for host connection, one for peripheral daisy‑chaining)
Cooling: Low‑noise fans (rated at 17 dBA)
Compatibility: macOS, Windows 10, and Linux systems with Thunderbolt 3 or Thunderbolt 4 ports
How to use
Install the required PCIe cards into the chassis slots according to their physical size and the supported slot configuration (up to three single‑width full‑height cards, or one double‑width plus one single‑width card). Connect the Echo III to your computer using the included Thunderbolt cable and secure the connection with the ThunderLok 3 if desired. Power on the chassis; it can power on or off automatically with the host computer. Ensure that any necessary drivers or vendor software for installed PCIe cards are installed on the host system before use.
Usage recommendations
Place the chassis in a well‑ventilated rack or workspace, allowing clearance for airflow to maintain low fan speeds. Use the included Thunderbolt cable and ThunderLok 3 to prevent accidental disconnection, and install vendor‑provided drivers and firmware updates for connected PCIe cards to ensure system stability and compatibility.

## Specifications

| Feature | Value |
|---|---|
| Power supply | 400 W |
| Housing material | Steel |
| 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 | Silver |

### 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 Silver Steel 1 external PCIe chassis cost, and is it available for purchase?

The price is 2,132.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 2 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, Leasing for legal entities. All transactions are 100% secure and encrypted.

### Can Sonnet Echo III Silver Steel 1 external PCIe chassis 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/12051308/67596466_large.webp