A . A、0.62208Gbit/s-up 1.24416Gbit/s-downB . B、2.48832Gbit/s-up 1.24416Gbit/s-downC . C、0.62208Gbit/s-up 2.48832Gbit/s-downD . D、2.48832Gbit/s-up 2.48832Gbit/s-down
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