Inateck 4 Ports PCI-E to USB 3.0 Express Card compatible Mac Pro (Early 2008 to 2012 Late Version) KT4004 Expansion of 4 ports USB 3.0 connections; No additional power supply for normal recognition and operation needed anymore, fast and easy installation, keeps your Mac Pro case tidy Compatible System: Mac OS 10.8.2 to Mac OS 10.9.5. It is applicable to MAC Pro(Early 2008 to 2012 Late Version); Windows XP/Vista/7/8/10(32/64-bit). Incompatible with Mac OS X 10.10 Yosemite or Above With easy installation, simple solution for your Mac Pro. Enjoy copying videos, music, photos, data files between USB devices and the computer at blazing fast speeds SuperSpeed USB 3.0 supports transfer rates of up to 5Gbps - The actual transmission speed is limited by the setting of the device connected Package: 1x USB3.0 PCI-E Expansion Card; 1x CD Driver; 1x User's Manual