The portable Thunderbolt 2 PCIe expansion box provides an additional PCIe slot for systems that do not support or have enough available space for expansion cards. The external Thunderbolt 2 connection allows you to daisy-chain up to 5 additional Thunderbolt devices, making this the ideal plug and play companion especially when you have to take your system with you. Replacing the card is a simple matter of removing three hand tightening screws, so no tools are required. Model No. :C AKiTiO Thunder2 PCIe Box Part No. :C T2PC-TIA-AKTU (without PCIe card) Certifications:C CE FCC Thunderbolt technology Case material:C High quality aluminum with metal chassis Application:C 1 x PCIe card Supports half-length, full-height and double-width cards PCIe (x16) slot provides a maximum of 25W Does NOT support graphics cards RAID mode:C Not applicable Interface/Ports:C 2x Thunderbolt 2 ports 1x internal PCIe (x16) slot with 4 lane PCI Express interface Data transfer:C Thunderbolt 2 interface up to 20Gbps System requirements (PC) :C Not supported System requirements (Mac) :C Mac OS 10.9 or above Computer with Thunderbolt connector Power supply:C External power adapter (UL, cUL, CE, FCC, BSMI, TUV approved) Input: AC 100-240V, 50Hz-60Hz Output: DC +12V/5A Fan noise level:C 23 dB(A) Package contents:C AKiTiO Thunder2 PCIe Box Thunderbolt cable Power adapter Setup guide Item Dimension (LxWxH):C 12.4 x 12 x 4.9 Weight:C 4.39 lb Warranty Information:C 2 Years