Sonnet Echo SE I T5 is a 1-slot PCIe 4.0 expansion card system for Thunderbolt 5 80 GB/s. Sonnet Echo SE I T5 is designed for computers with a Thunderbolt 5 or USB4v2 port, allowing you to connect one full-size or half-size PCIe 4.0 card (plus an expansion card). The enclosure is also compatible with earlier versions of the Thunderbolt standard, i.e., Thunderbolt 4 and Thunderbolt 3, as well as USB4.
Sonnet Echo SE I T5 Thunderbolt 5 | USB4 Box 1xPCIe 4.0 80Gb/s 6000MB/s
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Sonnet Echo SE I T5 is a 1-slot PCIe 4.0 expansion card system for Thunderbolt 5 80 GB/s. Sonnet Echo SE I T5 is designed for computers with a Thunderbolt 5 or USB4v2 port, allowing you to connect one full-size or half-size PCIe 4.0 card (plus an expansion card). The enclosure is also compatible with earlier versions of the Thunderbolt standard, i.e., Thunderbolt 4 and Thunderbolt 3, as well as USB4.
Compact design. Maximum performance.
Sonnet Echo SE I T5 - 1-slot Thunderbolt 5 to PCIe card expansion system for computers with Thunderbolt or USB4 ports.
Connect one full-size or half-size PCIe card (plus an expansion card).
Laptops and mini computers with Thunderbolt 5 ports offer tremendous computing power, but they lack the PCIe slots that content creation professionals need to connect adapter cards and add the specialized ports and processing capabilities essential to their work. Sonnet offers the perfect solution to overcome this limitation with the Echo™ SE I T5 Thunderbolt™ 5 to PCIe card expansion system. This compact, single-slot system—compatible with Apple M-series computers, Intel Mac computers with Thunderbolt 3 ports, as well as Windows and Linux computers with Thunderbolt 5 or 4 ports or USB4 — allows you to easily connect almost any Thunderbolt-compatible PCIe card that is not a graphics card to your computer using the included Thunderbolt 5 cable.

PCIe Pro Card Expansion
Echo SE and T5 allow you to connect a PCIe Pro card—such as a video capture and playback card, audio interface, SAS, SATA, or Fibre Channel host bus adapter, 10Gb or 25Gb multi-port Ethernet card, or RAID controller—to add ports and processors that your computer lacks. By providing the installed card with up to 6000 MB/s of bidirectional PCIe bandwidth—twice that of Thunderbolt 4 or 3—you'll be able to achieve even better performance for cards with very high bandwidth requirements when connected to a computer with Thunderbolt 5 ports!
One PCIe 4.0 slot and expansion card space
The Sonnet Echo SE I T5 has an x8 PCIe 4.0 slot and supports single or dual-width PCIe cards. Double width? Examples include professional video and audio cards, such as the Blackmagic Design DeckLink 8K Pro G2, which occupy two card slots, or motherboards with attached expansion cards that use the adjacent slot for additional ports.

Power reserve
The Echo SE I T5 includes an additional PCIe power connector that allows you to use cards that require additional power, such as the AJA Kona 5, Blackmagic Decklink 4K Extreme12G and DeckLink 8K Pro G2, and Deltacast 12G/4C.
Supports almost all Thunderbolt-compatible PCIe cards, except graphics cards
Compact at just 3.4 inches wide, 11.2 inches long, and 5.8 inches high, the Echo SE I T5 supports cards up to 7.75 inches long, making it compatible with almost all Thunderbolt-compatible PCIe 4.0, 3.0, 2.0, and 1.1 cards compatible with Thunderbolt. Not sure if the card you have or are considering is compatible? We've prepared a compatibility list that identifies Thunderbolt-compatible cards and is organized by fit and power compatibility with specific expansion systems.

Lightweight. Durable. Smart.
The lightweight, durable aluminum enclosure of the Echo SE I T5 securely protects the installed PCIe card. Since the device turns on and off automatically with your computer, there is no power switch on the enclosure, which prevents wasted energy from forgetting to turn off the device.

Near-silent operation
The Echo Express SE I T5 is designed for ultra-quiet operation, making it ideal for noise-sensitive environments such as recording studios, television studios, editing rooms, and shared office spaces. Its internal airflow path has been optimized so that a variable speed, temperature-controlled fan can quietly and efficiently cool the installed card — even under maximum load.
Secure connection for high performance — Thunderbolt 5 cable and ThunderLok included
Sonnet includes a Thunderbolt cable designed to deliver the full bandwidth and power performance of Thunderbolt 5. The cable is fully compatible with computers equipped with Thunderbolt 5, 4, and 3, as well as USB4. Also included is Sonnet's ThunderLok Thunderbolt connector lock, which prevents accidental cable disconnection.
ThunderLok Advantages
Many Sonnet Thunderbolt products equipped with Thunderbolt ports have threaded mounting holes that allow you to securely attach the Sonnet ThunderLok connector lock to prevent accidental disconnection of Thunderbolt cables.
Thunderbolt 5 – tomorrow's performance. Today.
The Echo SE I T5 has the features and quality you expect from a Sonnet expansion system, plus a Thunderbolt 5 interface for maximum performance. With bidirectional data transfer speeds of 80 Gbps—twice that of Thunderbolt 4—and display bandwidth of up to 120 Gbps, you'll revolutionize your productivity.
More than just the fastest external interface available
The Echo SE I T5 features a dual-port, ultra-fast Thunderbolt interface that provides the PCIe bandwidth necessary to run most cards at maximum performance. One port is reserved for connecting your computer, while the other port allows you to connect additional Thunderbolt or USB peripherals.
Connect up to five additional Thunderbolt devices - The additional port supports Thunderbolt 5, 4, and 3 peripherals; you can even connect five additional self-powered Thunderbolt devices in a daisy chain configuration.
- Supports 80 Gb/s, 40 Gb/s, 20 Gb/s, and 10 Gb/s USB peripherals - Connect an ultra-fast USB device to the second Thunderbolt port using the appropriate cable or adapter.
- Powering peripherals - Bus-powered devices that require additional power receive 15W through an additional Thunderbolt port.
- Support for connecting a single 8K display - Get the most out of your computer's single Thunderbolt port by connecting the highest resolution display supported by your computer.

Key Features and Specifications
- Enhances connectivity, improves capabilities – connects a high-performance PCIe card to your computer via Thunderbolt ports.
- Thunderbolt 5 to PCIe device – provides 6000 MB/s bidirectional PCIe bandwidth for the installed card.
- Broad PCIe card compatibility – PCIe 4.0 x8 card slot supports half-length+ (up to 7.75 inches long), full-height, single-width PCIe cards (plus one daughter card). See Sonnet's PCIe card compatibility PDF.
- Pro Power – additional PCIe power connector for high-power cards; second Thunderbolt port provides 15W of power to a connected peripheral.
- Compact. Lightweight. Incredible performance – small in size, but powerful enough to support almost all Thunderbolt-compatible PCIe cards at maximum performance.
- Connect additional devices – one Thunderbolt port connects to your computer; the second port supports daisy chaining additional Thunderbolt peripherals or connecting a USB device.
- Extremely quiet – a variable-speed, temperature-controlled fan automatically and quietly cools the card.
- Durable aluminum housing – provides solid and secure protection.
- Smart power management – the system turns on/off automatically with your computer; no power switch is required.
- Compatibility – compatible with M-series Macs and Intel-based Macs with Thunderbolt 3 ports; Windows computers with Thunderbolt 5 or 4 ports or USB4 ports; and Linux computers with Thunderbolt 5 or 4 ports or USB4 ports. For the latest information on computer compatibility, operating systems, and technical support, please visit the official product website under Specifications.
- Dimensions (W x D x H) – 8.5 x 28.3 x 14.6 cm (3.0 x 11.13 x 5.75 inches).
- Weight – 4.40 kg (9.7 lbs).
- Package contents – Echo SE I T5 Thunderbolt 5 expansion system; universal power adapter; region-specific power cable; 6-pin to 6-pin auxiliary power cable; 0.8-meter Thunderbolt 5 cable; ThunderLok-A connector lock; and documentation.
- Warranty – 2-year product warranty.
- Customer support – Lifetime technical support.
- Sonnet advantages — innovative technology since 1986.
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