Key Features • Adds Expansion Card Slots to Any Computer with a Thunderbolt Port—The Echo Express Pro supports two standard width, full-length cards, or one double-width, full-length x16(1) PCIe 2.0 card • High Bandwidth—With Thunderbolt’s PCI Express performance and 10Gb/s of throughput on each of the two channels in both directions, Echo Express Pro is perfect for special-purpose PCIe cards for video capture, audio interface, 8Gb Fibre Channel, 10 Gigabit Ethernet, digital audio, RAID control, and more • Power for Powerful Cards—Integrated 150W power supply • Now with 75W Auxiliary Power Connector and Power Harness Cable—6-pin Micro-Fit Jr.™ 75W auxiliary power connector provides power to PCIe cards that require supplemental power; includes 6-pin Micro-Fit Jr. to 6-pin Mini-Fit Jr. power harness cable for connections Avid® Pro Tools|HDX Card Support—If you have an Avid Pro Tools|HDX PCIe card, Sonnet has a specifically designed power cable (sold separately) to accomodate up to two HDX cards • Variable Speed Fans—Operate slow and quiet with cooler cards, better cooling for hot cards • Two Thunderbolt Ports—Daisy chain up to six devices to a single port on the host computer • Energy Saver Mode—Powers on/off automatically with the computer • Integrated Universal Power Supply—Built-in power supply means no external power brick to dangle or loose • Rugged Aluminum Housing—Portable protection for any environment Expand Your Adapter Card Possibilities Sonnet’s Echo Express Pro Thunderbolt Expansion Chassis enables you to connect one or two high-performance PCIe 2.0 cards (sold separately) to any computer with a Thunderbolt port. Imagine using full-size professional video capture, audio interface, 8Gb Fibre Channel, 10 Gigabit Ethernet, and RAID controller cards with your iMac®, Mac® mini, MacBook® Air or MacBook Pro computer. Echo Express Pro includes two x16(1) PCIe 2.0 slots and supports two standard width, full-length cards, or one double-width, full-length card with separate I/O bracket. The chassis includes a built-in 150W power supply, 75W auxiliary power connector and power harness cable, and two variable speed fans to quietly keep cards cool, only speeding up as needed to cool the hottest cards. Two Thunderbolt ports support daisy chaining of up to six devices to a single port on your computer. Do you have a card in mind but aren't sure which Echo Express you need? We've worked closely with PCIe card manufacturers to provide a list of compatible PCIe cards on our supporting PCIe Card Thunderbolt Compatibility Chart. The chart provides an up-to-date list of tested cards that are recognized over a Thunderbolt connection, compatible with Thunderbolt technology requirements, and that will physically fit the enclosure. Compatibility • For complete Mac compatibility list, visit product's webpage. Note: PCIe adapter cards not included. Thunderbolt connection requires a Thunderbolt cable, available to purchase through Sonnet's Online Store. (1) The PCIe slot will physically accommodate up to a x16 PCIe card, however the actual electrical bandwidth of Thunderbolt is x4.