My laptop is mbp 15" of early 2011. I linked it to an external drive with usb3.0 support through AKiTiO Thunder Dock, a hub which provides multiple host ports, including USB3.0, eSATA, Firewire 800, and thunderbolt as well. However, the transfer rate is almost as low as USB 2.0. This is from the System Information Hardware Overview: USB 3.0 High-Speed Bus: Host Controller Location: Thunderbolt Host Controller Driver: AppleUSBXHCI PCI Device ID: 0x1100 PCI Revision ID: 0x0010 PCI Vendor ID: 0x1b73 Bus Number: 0x10 besides, I found out my external drive is working through BOT (IOUSMassiveStorageClassic.kext) instead of UASP (IOUSBAttachedSCSI.kext). and even when UASP is loaded manually, it's still not working. is it possible that my external drive linked to hub works under UASP? or on an mbp 15" of early 2011 it just doesn't work?