OWC has just outed a PCIe Thunderbolt expansion chassis for adding half-length PCIe 2.0 adapter cards with the Mac mini, iMac, MacBook Air, MacBook Pro, and other Thunderbolt-equipped but PCIe-less computers. The professional PCIe cards allow for video capture and/or editing, media transcoding, audio processing and data storage. The Helios chassis can transfer data at up to 10Gbps and are compatible with AHCI-compliant cards.