Therefore a compliant bus powered hub can have no more than four downstream ports and cannot offer more than four 100 mA units of current in total to downstream devices (since the hub needs one unit for itself). USB current (related to power) is allocated in units of 100 mA up to a maximum total of 500 mA per port. Now, it could work, since USB hosts can supply power (and so can PS/2 ports). The main reason why I don't see DIN5 to USB converters is because DIN5 isn't as used in modern PC's as PS/2 ports, that have also phased out to favor USB. Your pointed question actually answers a lot.Ī DIN5 connector (aka a MIDI connector) is physically the same as a PS/2 connector.
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