Got a Thunderbolt or Thunderbolt 2-equipped Mac? The Sonnet Technologies Echo Express SE II Thunderbolt Expansion Chassis is ready to take it to the next level. It lets you use PCIe-based devices, like pro-level audio interfaces, with any Thunderbolt-equipped Mac. That means you can turn your laptop into a portable recording rig with a high track count, low latency, and exceptional stability. The Echo Express SE II supports two half-length+ (up to 7.75" long), full-height, single-width cards, and has dual Thunderbolt ports for daisy-chaining your other devices. When you need maximum bandwidth, speed, and performance, add the Sonnet Technologies SE II to your Mac.