The Echo Express III R Thunderbolt 2 Expansion Chassis for PCIe Cards from Sonnet mounts in a rack space 2U tall in height. It is 16″ (40.6cm) deep, making it perfect for use in a wide range of mobile racks, carts, rack cases and server rooms. The expansion chassis even saves space for other equipment.

Echo Express III enables you to connect 3 compatible full size professional video capture, audio interface and other special purpose cards to your iMac, Mac mini, new Mac Pro, MacBook Air or MacBook Pro with a Thunderbolt 2 port. Featuring 20 Gbps Thunderbolt 2 technology, this Echo chassis ensures optimum performance from the most demanding PCIe cards with every compatible computer. It integrates a universal 300W power supply and includes a 75W auxiliary power connector for cards that require supplementary power. In addition, the Echo Express III is environment friendly; it automatically powers off when the connected computer powers off or sleeps. The use of larger, slower spinning fans in the Echo Express III allows for maximum noise reduction. Two Thunderbolt 2 ports support daisy chaining of up to six devices to a single port on your computer.


The original 10 Gb/s Thunderbolt interface has provided breakthrough bandwidth for external expansion, which is more than sufficient to support the maximum performance of most PCIe cards. However, some high bandwidth cards such as the RED Rocket, 16 Gb Fibre Channel, multi port 10 Gigabit Ethernet cards, or multiple bandwidth hungry cards require more than 10 Gb/s. Thunderbolt 2 overcomes this barrier by providing a higher bandwidth of up to 20 Gb/s for these demanding applications.


Connect to Professional PCIe Cards
Thunderbolt 2 Interface
3 PCIe Slots
Temperature Controlled Fans
300W Universal Power Supply
Steel Housing

Sonnet Echo Express III R Thunderbolt 2 Expansion

  • Dimensions 48.26 x 40.6 x 8.85 cm
    Form Factor 3U
    EAN 732311009990
    Brand Sonnet
    Series Echo Express III R
    Output Interface PCIe x 3
    Warranty 1 Year
    Host Interface Thunderbolt 2