What Is Usb - HP Visualize c360 Supplementary Manual

• U.S.B. stands for
• Moderate speed
• Multiple devices
• Cubicle span
• Flexible topology
• Flexible power
• Robust
• Low-cost
• Idiot-proof
Although USB ports have been shipping on PCs for over two years,
widespread acceptance has been delayed by lack of
devices, which, in turn, have been awaiting:
• O.S. support:
• BIOS support:
• Economics:
1. Hot attach-detach is planned, but not fully implemented in the first HP-UX USB support.

What is USB?

Universal Serial Bus (Logo:
12 Mbps/sec. or 1.5 Mbytes/sec.
up to 126 - on a single resource set.
cabling 5m per segment, 30m max. with hubs
tiered star
devices bus- or locally-powered, w/suspend-resume APM
PnP, hot attach-detach
4 wire
Unique modular connectors:
Style A (upstream, to hub/host):
Style B (downstream, detach at device):
Still waiting for "NT". Win95 support is problematic.
Most "USB" PCs have no USB console capability in BIOS.
Some PS/2 devices are still cheaper than USB during 1999.


Icon:
1

    
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A
B