Toshiba USB Port Replicator II - Manual (Page 4)

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Connectors
One DB-9 RS-232 serial interface connector supports baud rates from 1,200 to
115.2K.
One DB-25 parallel connector supports IEEE-1284 bi-directional printer port.
One Mini-din for PS/2 keyboard, mouse.
Four USB receptacle type A downstream ports.
One USB type B upstream connector.
USB DOCK Functions
The available functions of USB Port-Replicator depend on the status of power supplied:
Bus powered
1. Connecting USB cable to PC to provide bus power.
2. When you provide bus power only, the PS/2 mouse & keyboard, RS232 and
printer functions will be enabled. However, the USB Downstream Ports are
disabled.
External powered
1. Connecting power adapter to provide external power.
2. When you provide external power, the USB Downstream Ports are enabled,
and you can use all the functions of USB Port-Replicator.