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Silver rackmount enclosure with Thunderbolt ports and PCIe slots visible

Sonnet Technologies

Sonnet Technologies Echo III Rackmount Thunderbolt 3 PCIe Expansion System

SKU CH-TXS9-Q8323

A rackmount enclosure adds three PCIe 3.0 slots via dual Thunderbolt 3 ports at 40 Gb/s with a 400 W supply and 75 W auxiliary power

  • Type1 card
  • Add three PCIe cards with full-height support
  • 400W power supply drives demanding expansion cards
  • Dual Thunderbolt 3 ports enable 40 Gb/s daisy-chaining
  • 75W supplemental connector powers high-draw add-in cards
  • Rackmount chassis fits standard server cabinets

Echo III Rackmount Thunderbolt 3 Expansion

This Sonnet Technologies enclosure adds three PCIe 3.0 slots to any Thunderbolt 3 desktop. It accepts one x16 and two x8 cards in full-height and full-length form factors. Configurations support either three single-width cards or one double-width plus one single-width card. The unit is built for rackmount installation in professional environments.

Thunderbolt 3 bandwidth and protocol limits

The dual ports deliver up to 40 Gb/s for PCIe traffic and 10 Gb/s for USB 3.1 data. DisplayPort 1.2 video can pass through the same connection. Host compatibility requires Windows 10, macOS 10.12.6 or later, or Linux 5.0 or later. The interface caps total throughput, so multiple high-bandwidth cards share the 40 Gb/s pipe.

Rackmount chassis with 400 W supply

A 400 W internal power supply drives the expansion slots and an internal 6-pin connector provides up to 75 W supplemental power for compatible cards. The rackmount design secures the unit in standard server racks for permanent deployment. Dual Thunderbolt 3 ports allow daisy-chaining of additional peripherals without extra hubs.

Highlights

  • Add three PCIe cards with full-height support
  • 400W power supply drives demanding expansion cards
  • Dual Thunderbolt 3 ports enable 40 Gb/s daisy-chaining
  • 75W supplemental connector powers high-draw add-in cards
  • Rackmount chassis fits standard server cabinets

Specifications

Type1 card

Questions about this item

Which slot configuration fits my cards — one double-width plus one single-width, or three single-width cards?

The enclosure supports either one double-width and one single-width card, or three single-width cards, all full-height and full-length, powered by the 400W supply.

What does the 40 Gb/s Thunderbolt 3 throughput mean for my expansion cards?

The 40 Gb/s link carries PCIe 3.0 traffic for the x16 and two x8 slots, so high-bandwidth cards such as 10 GbE adapters or RAID controllers can run near their rated speed.

How does the 6-pin supplemental power connector limit the cards I can install?

The 6-pin connector delivers up to 75W extra power, allowing cards that need more than the slot provides while staying within the 400W total budget.

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