Key Features • Adds an Expansion Card Slot to Any Computer with a Thunderbolt Port—The Echo Express SE supports a single half-length (up to 6.5"), full-height, single-width, x8(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, the SE is perfect for special-purpose PCIe cards for video capture, audio interface, 8Gb Fibre Channel, 10 Gigabit Ethernet, digital audio, RAID control, and more • Two Thunderbolt Ports—Daisy chain up to six devices to a single port on the host computer • Temperature-Controlled Fan—Automatically operates slowly and quietly with cooler cards, provides better cooling for hot cards • Energy Saver Mode—Powers on/off automatically with the computer • Aluminum Housing—Portable protection for any environment Echo Express DNA and Performance in a Smaller and Lighter Package Sonnet's Express SE is small, light, and perfect for use in situations where the installed PCIe card doesn't require much space or a lot of power. Like its larger sibling, the Echo Express, the SE has a single slot, but uses a smaller enclosure that accommodates a half-length (up to 6.5" long), full-height, single-width, x8(1) PCIe 2.0 card. The Echo Express SE enables you to use a high-performance PCIe card (sold separately) with any computer with a Thunderbolt port. Imagine using a compatible professional video capture, audio interface, SAS & SATA HBA, 8Gb Fibre Channel, 10 Gigabit Ethernet, or RAID controller card with your iMac®, Mac® mini, MacBook® Air or MacBook Pro 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. Mac Compatibility For complete Mac and PC compatibility list, visit product's webpage. Note: PCIe adapter cards not included. Thunderbolt connection requires a Thunderbolt cable, available at the Apple Store. (1) The PCIe slot will physically accommodate up to a x8 PCIe card, however the actual electrical bandwidth of Thunderbolt is x4.