9
Appendix A FAQ
Q: What is USB?
A: USB (Universal Serial Bus) is a
“
Plug and Play
”
interface between a computer and add-on
devices (such as audio players, joysticks, keyboards, telephones, scanners and printers).
With USB, a new device can be added to your computer without having to add an adapter
card or even having to turn the computer off.
Q: What is the maximum speed of USB 2.0?
A: USB version 1.1 supports a data rate of 12 Mbps. The New USB 2.0 Supports a
data rate up to 480 Mbps.
Q:
How long of a cable can I use to connect UE-9521?
A: The USB specification limits the length of a cable between two devices to 5
meters. About the RJ-45 cable, the max length is 100m.
Q: Why I cannot install UE-9521 into WinNT?
A: WinNT is not support USB device, so you cannot install UE-9521 into WinNT
system.
Q: When UE-9521 connects to my PC, Windows will show me a message such as
“
a
high speed USB device plug into a low speed USB device
”
, what is it mean?
A: When Windows show this message, it is mean you connect UE-9521 into a USB 1.1 port.
UE-9521 is a USB 2.0 device, when you connect USB2.0 device into a USB 1.1 port,
Windows will show you the message to prompt you the USB 2.0 device will work as a USB
1.1 device.
