Intel Vig390s - Manual (Page 19)

Vig390s Motherboard Manual V1.0 18
USB Support
The motherboard has four rear USB 2.0 ports; note optional front panel USB adaptor
connector is required to use the internal USB headers to provide up to 4 more
additional ports. One USB peripheral can be connected to each port. For more than
four USB devices, an external hub can be connected to either port. The
motherboard fully supports the universal host controller interface (UHCI) and (EHCI)
and uses UHCI-and EHCI- compatible drivers. The ICH5 provides the USB controller
for all ports.
The port arrangement is as follows:
• Two ports are implemented with stacked back panel connectors, adjacent to
the PS/2 connectors
• Two ports are implemented with stacked back panel connectors, adjacent to
the audio connectors
• Four ports are routed to two separate front panel USB connectors
Note: USB 2.0 drivers are available for Windows 2000 Pro and Windows XP, and
currently not supported by any other operating system.
USB features include:
• Self-identifying peripherals that can be plugged in while the computer is
running.
• Automatic mapping of function to driver and configuration.
• Supports isochronous and asynchronous transfer types over the same set of
wires.
• Supports up to 127 physical devices.
• Guaranteed bandwidth and low latencies appropriate for telephony, audio,
and other applications.
• 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 (sub-channel)
USB device is attached to the cable. Use shielded cable that meets the
requirements for high-speed (fully rated) devices.
IDE Support
The VIG390S motherboard provides four IDE interface connectors:
• Two Parallel ATA (P-ATA) IDE connectors, which support a total of four
devices (two per connector)
• Two Serial ATA (S-ATA) IDE connectors, which support one device per
connector