SOYO SY-7IWB User Manual page 15

Motherboard Description
latency
l
Demultiplexing of address and data on the bus for near 100 percent
bus efficiency
l
AC timing for 133 MHz data transfer rates, allowing real data
throughput in excess of 500 MB/sec
1-7.2 Universal Serial Bus (USB)
The motherboard has two USB ports; one USB peripheral can be
connected to each port. For more than two USB devices, an external hub
can be connected to either port. The motherboard fully supports the
universal host controller interface (UHCI) and used UHCI-compatible
software drivers.
Specification USB features include:
l
Self-identifying peripherals that can be plugged in while the
computer is running
l
Automatic mapping of function to driver and configuration
l
Support for isochronous and asynchronous transfer types over the
same set of wires
l
Support for up to 127 physical devices
l
Guaranteed bandwidth and low latencies appropriate for telephony,
audio, and other applications
l
Error-handling and fault-recovery mechanisms built into the protocol
¿
Note
Computer systems that have an unshielded cable attached to a USB port
may not meet FCC Class B requirements, even if no device or a low-speed
USB device is attached to the cable. Use shielded cable that meets the
requirements for a full-speed USB device.
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SY-7IWB