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Adding USB3.0 to late 2009 iMac (11,1) | MacRumors Forums
iMacのUSBが端子によって速度が2倍違う件 : クマデジタル
Apple iMac (Winter 2009) review: Apple iMac (Winter 2009) - CNET
Adding USB3.0 to late 2009 iMac (11,1) | MacRumors Forums
By the numbers: Apple's new iMac vs. the Windows 8 all-in-one competition - The Verge
Adding USB3.0 to late 2009 iMac (11,1) | MacRumors Forums