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Sonnet Echo Express SE I Thunderbolt 5 One-Slot PCIe Card Expansion System

1-slot Desktop Thunderbolt 5 to PCIe Card Expansion System for Computers with Thunderbolt or USB4 Ports

SKU: SON-ECHO-EX-SE1-T5

$390.00

This compact, single-slot system — compatible with Apple M series Macs, Intel Macs with Thunderbolt 3 ports, plus Windows and Linux computers with Thunderbolt 5 or 4 or USB4 ports — enables you to easily connect almost any Thunderbolt compatible, non-GPU PCIe card to your computer via an included Thunderbolt 5 cable.

Check out Thunderbolt Expansion Systems PCIe Card Comapatibility Chart

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In stock

On Backorder with Supplier. Stock Not Expected until early July 2026

Connect One Full-height, Half-length+ PCIe Card (Plus Daughter Card)
Laptop and mini computers with Thunderbolt 5 ports offer tremendous processing power, but don’t have the PCIe slots creative pros need for connecting adapter cards to add specialized ports and processing capabilities critical to their workflows. Sonnet offers the ideal 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 Macs, Intel Macs with Thunderbolt 3 ports, plus Windows and Linux computers with Thunderbolt 5 or 4 or USB4 ports — enables you to easily connect almost any Thunderbolt compatible, non-GPU PCIe card to your computer via an included Thunderbolt 5 cable.

Pro PCIe Card Expansion
Echo SE I T5 enables you to connect a pro PCIe card — such as video capture and playback; audio interface; SAS, SATA or Fibre Channel host bus adapter; multiport 10Gb or 25Gb Ethernet; or RAID controller — to add the ports and processors your computer lacks. Providing up to 6000 MB/s of bi-directional PCIe bandwidth to the installed card — twice that of Thunderbolt 4 or 3 — you’ll be able to extract even better performance with cards with ultra-high bandwidth requirements when connected to a computer with Thunderbolt 5 ports!

One PCIe 4.0 Slot and Space for a Daughter Card
Sonnet Echo SE I T5 features an x8 PCIe 4.0 slot, and supports a single- or double-width PCIe card. Double-width? Examples include pro video and audio cards like the Blackmagic Design DeckLink 8K Pro G2, which spans two card spaces, or main cards with connected daughter cards that use the neighboring space for additional ports.

Power to Spare
Echo SE I T5 includes an auxiliary PCIe power connector that enables you to use a card that requires extra power such as the AJA Kona 5, Blackmagic Decklink 4K Extreme12G and DeckLink 8K Pro G2, and Deltacast 12G/4C.

Supports Almost Any Thunderbolt-compatible, Non-GPU PCIe Card
Measuring just 3.4 inches wide by 11.2 inches long by 5.8 inches tall, the compact Echo SE I T5 supports cards at a maximum of 7.75 inches long, making it compatible with nearly all Thunderbolt-compatible PCIe 4.0, 3.0, 2.0, and 1.1 cards. Not sure if a card you own or are considering is compatible? We’ve put together a compatibility list that identifies cards that are Thunderbolt compatible and organized by fit and power compatibility with specific expansion systems.

1-slot Desktop Thunderbolt 5 to PCIe Card Expansion System for Computers with Thunderbolt or USB4 Ports
Adds Connectivity, Improves Capabilities - Connects a high-performance PCIe card to your computer with Thunderbolt ports
Thunderbolt 5 to PCIe Device - Provides 6000 MB/s of bi-direction PCIe bandwidth to the installed card
Broad PCIe Card Compatibility - PCIe 4.0 x8 card slot support one half-length+ (maximum 7.75 inches long), full-height, single-width PCIe card (plus one daughter card)
Pro Power - Auxiliary PCIe power connector for a power-hungry card; second Thunderbolt port provides 15W of power to the connected peripheral
Compact. Lightweight. Amazing Performance. - Small footprint, but large enough to support nearly every Thunderbolt-compatible PCIe card at maximum performance
Connect Additional Devices - One Thunderbolt port connects to computer; second port supports daisy-chaining additional Thunderbolt peripheral devices, or connection of a USB device
Extremely Quiet - Temperature-controlled, variable-speed fan automatically and quietly cools the card
Rugged Aluminum Housing - Provides robust and secure protection
Smart Power Management - System powers on/off automatically with the computer; no power switch required
Mac Compatible - Supports all M series Macs and Intel Macs with Thunderbolt 3 ports
Windows Compatible - Supports Windows computers with Thunderbolt 5 or 4 ports, or USB4 ports
Linux Compatible - Supports Linux computers withThunderbolt 5 or 4 ports, or USB4 ports

Compatibility

Mac Compatibility:
- Mac (M series)
- Mac (Intel) with Thunderbolt 3 ports
- macOS 14+
- macOS Tahoe compatible
Windows Compatibility:
- Windows computer with Thunderbolt 5 or 4 ports
- Windows computer with USB4 or USB4 V2 ports(1)
- Windows 11
Linux Compatibility:
- Linux computer with Thunderbolt 5 or 4 ports
- Linux Kernel 6.1, 6.12
PCIe Card Compatibility:
- For a list of compatible PCIe cards, see the following PDF

PCIe Card Compatibility PDF Download Link

Hardware

Part Number: ECHO-EX-SE1-T5
Warranty: 2-year
Form Factor: Thunderbolt desktop enclosure
External Connectors:
- Two Thunderbolt ports
- 12V power port
Internal Connector: 6-pin Mini-Fit provides power for PCIe cards that require supplemental power
Expansion Slot: One x8 mechanical (x4 electrical) PCIe 4.0 [Thunderbolt 5 spec]
PCIe Card Supported:
- One half-length+ (maximum 7.75 inches long), single-width, full-height x8 PCIe card
- One daughter card
Power Adapter:
- Universal 60W, 100-240V, 50-60 Hz
- NRTL Certified
Operating Temperature: 0ºC to 35ºC (32ºF to 95ºF)
Dimensions (WxDxH): 3.0 x 11.13 x 5.75 in. (8.5 x 28.3 x 14.6 cm)
Weight: 2.5 lbs (1.13 kg)
Compliance:
- RoHS 3 (Directive 2015/863)
- IEC62368-1 and IEC62368-2