What is the maximum number of USB devices a host controller can handle?
- 128
- 155
- 64
- 127
EXPLANATION
At 7 bits long, a single USB Host Controller can allow up to 127 (2^7 – 1 Host Controller) connected devices.USB hubs can be cascaded up to seven times, the maximum number of user devices is reduced by number of hubs. So, with 19 hubs attached, the maximum number of available devices is reduced 127 − 19 = 108.
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