Procomp BIW2A, User Manual

Page: 45 / 68

Using The Motherboard
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Connecting USB Peripherals
The motherboard has two onboard Universal Se-
rial Bus ports. These ports can connect to unpow-
ered downstream devices or to either a bus-
powered or self-powered USB hub which provide
more ports. USB devices are “hot swap” which
means you don’ t have to turn the computer off
before connecting or disconnecting a device. The
USB can support up to 127 devices.
USB is an interface for peripherals that use a rela-
tively low data transfer speed, such as USB key-
boards, pointing devices, scanners, printers, mo-
dems and other telephony devices and game de-
vices. USB also supports MPEG-1 and MPEG-2
digital video. It has a maximum transfer rate of
12Mbits per second, which is equivalent to 1.5MB
per second. To use USB the computer must use an
Operating System that supports it. For example,
Windows 95 OSR2 supports USB as does Win-
dows 98. Earlier versions of Windows do not sup-
port USB.