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5.4.Scalability
If you wish to synchronise more devices, multiple hubs can be connected together to allow
more devices to be managed from a single host computer simultaneously.
In order to daisy-chain multiple hubs, each hub needs to be connected to mains power
individually and the first hub in the chain should be connected to the local computer through
the hubs' "host port". The Host port of the next hub in the daisychain is then connected to any
of the first hubs downstream USB ports. More hubs are added in the same way.
way.
Using this daisy-chain approach, a maximum of four additional hubs can be linked, allowing a
total of 71 devices to be synced from a single host computer. Alternatively, a star topology can
be used, which allows up to 85 devices to be synced from a single computer. In this
arrangement, the first hub is attached in the same way, connecting the hubs host port to the
computer's USB port. Thereafter, five additional hubs can be attached to the downstream USB
ports of the first hubs by their host ports as shown below.
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