OWC is launching a new PCIe Thunderbolt expansion chassis today that provides the ability to take advantage of any professional level performance PCIe adapters (half-length PCIe 2.0 card up to 6.5″) on Thunderbolt Macs:

The Mercury Helios PCIe Thunderbolt Expansion Chassis is available now for $399.95, and it is shipping from OWC in “7-10 days.” A full list of features and specs from OWC is below:

Features and Specifications

  • Use any half-length, single width, full height x1, x4 or x8 Thunderbolt compliant and AHCI compliant PCIe card
  • Expansion slots: One PCIe 2.0 x8 (x4 mode)
  • Connection interfaces: Two Thunderbolt ports
  • Daisy-chain up to six devices
  • Bootable with AHCI compliant cards
  • External case dimensions: 5.7 in (W) x 8.8 in (D) x 2.9 in (H)
  • Weighs 2.4 lbs (without card)
  • Ventilated quiet cooling with a variable speed fan
  • Automatically powers on/off with computer
  • Warranty: 3-year
  • Compatible with any computer that can support Thunderbolt technology