Avg Char Width. Each hub permits as many as 127 bus connections. A bus-powered hub draws power from the host computer and can supply up to 500 milliamps at 5 volts. Downstream ports will receive 100 mA per port. The IMP2525A switch's resistance is a low 70-milliohms maximum, which IMP said is a 50 percent improvement over competitive devices.
Low resistance is necessary to reduce voltage loss at downstream ports.
The IMP2525A has one channel and 70-m ohms maximum switch resistance. The IMP2525 and IMP2526 each have two channels and 140-m ohms resistance.