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Sonnet Echo II DV 2-slot Thunderbolt 5 PCIe expansion card, silver metal enclosure, four Thunderbolt ports, dual-slot interior visible

Sonnet Technologies

Sonnet Echo II DV 2-Slot Thunderbolt 5 PCIe Expansion Card

SKU CH-NKYC-H2C6K

Connects two full-length, single-width PCIe cards via dual Thunderbolt 5 interfaces delivering 6000 MB/s bandwidth per slot

  • Connect two high-performance PCIe cards without internal slots via Thunderbolt
  • Each card runs at full 6000 MB/s bandwidth over Thunderbolt 5
  • Dual Thunderbolt 5 interfaces give independent PCIe 4.0 slot performance
  • Four Thunderbolt 5 ports enable daisy-chaining for single-cable computer connection
  • Each slot operates independently so two computers can share the expansion system

Dual-slot Thunderbolt 5 expansion

The Sonnet Echo II DV is a desktop expansion system that adds two full-length, single-width PCIe 4.0 slots to any computer with a Thunderbolt or USB4 port. It is built for creative professionals who need to run high-bandwidth video I/O, transcoding or networking cards without internal expansion slots. Each slot operates independently, so two cards can be connected to separate computers if required.

Check host port and card type

Verify that your computer provides Thunderbolt or USB4 connectivity, because the unit relies on those ports for data and power delivery. Only single-width, non-GPU PCIe cards are supported, regardless of their length or height. The two PCIe 4.0 slots are electrically isolated, so each card receives a dedicated Thunderbolt 5 link rather than sharing bandwidth.

Four Thunderbolt 5 ports enable daisy-chaining

Two ports connect directly to the host for maximum 6000 MB/s throughput per slot, while the remaining two act as downstream ports for daisy-chaining additional Thunderbolt devices. This topology lets you add storage, displays or further peripherals without consuming extra host ports. No GPU support is included, so the system cannot accelerate graphics workloads.

Punti di forza

  • Connect two high-performance PCIe cards without internal slots via Thunderbolt
  • Each card runs at full 6000 MB/s bandwidth over Thunderbolt 5
  • Dual Thunderbolt 5 interfaces give independent PCIe 4.0 slot performance
  • Four Thunderbolt 5 ports enable daisy-chaining for single-cable computer connection
  • Each slot operates independently so two computers can share the expansion system

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What comes in the box and what must I supply separately?

The system includes the chassis with two PCIe 4.0 slots and four Thunderbolt 5 ports. You supply the single-width, non-GPU PCIe cards and the Thunderbolt 5 cables to connect to your computer.

When should I use both Thunderbolt 5 connections instead of one?

Use both computer ports when you need 6000 MB/s to each installed card simultaneously; a single cable shares total bandwidth between the two slots.

What does the 6000 MB/s figure mean once the card is installed in my machine?

Each PCIe 4.0 slot can sustain up to 6000 MB/s of throughput over its dedicated Thunderbolt 5 link, so high-bandwidth capture or networking cards run at full speed without contention.

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