USB DIRECTOR/4-PORT HUB
4. Operation
The USB Director/4-Port Hub is an extension of the host’s USB bus. You only have to plug it into the host USB connector to operate. The hub is hot-pluggable; you can plug it in at any time, even when the host PC is powered on. When attached, the operation is automatic. The host software will detect that a device has been attached to the USB bus, query the device to identify it, and load the appropriate driver. The hub driver will then enable the hub and each of the ports. If the hub detects a device attached to the port, it will notify the host. The host will then communicate with the device to identify it and load its device driver. (This function may vary depending upon the individual device.)
The Hub has power on/off, overcurrent reporting, and suspend/resume controls for the hub as well as for each of the individual ports. The host can send a command to turn on or off the hub, and individual port, or a device attached to the port. Suspend is a global or individual device command that sets the device or hub into a low-power mode where it is virtually powered off (<500 microamps), yet allows a device to request a remote wakeup. A wakeup will be responded to with
