Philips 150V3F Electronic User's Manual page 72

USB Hub
Power connection
It is recommended that the AC adapter be plugged into the electrical outlet before the
hub.
It is recommended that the AC adapter is used at all time for high-speed devices and
multiple devices may cause a power shortage in the hub.
It is recommended that the AC adapter be used whenever multiple hubs in a stacking
configuration.
Do not remove the Ac adapter while the hubs is working.
USB connection
USB devices
This hub can be connected or disconnected to your PC when the computers up and
running programs, by using any USB port on your computer.
A & B type connector
Insert A connector into the down stream port on the PC or this hub.
Insert B connector into the up stream port of this hub or other USB devices.
Make sure that those all the way into the socket and is firmly connected.
Setup
When connecting this hub for the first time, a message of "Searching for unknown
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