先查詢裝置:
# lspci | grep -i ehci
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00:1d.7 USB Controller: Intel Corporation 82801DB/DBM (ICH4/ICH4-M) USB2 EHCI Controller (rev 01)
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解除:
# echo -n "0000:00:1d.7" > /sys/bus/pci/drivers/ehci_hcd/unbind
