Intel D865GLC Manual - Page 21

USB Support The motherboard has four USB 2.0 ports; note an optional front panel USB connector is required to use the internal USB header to provide 2 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 UHCIand 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 D865GLC motherboard provides four IDE interface connectors: • Two Parallel ATA IDE connectors, which support a total of four devices (two per connector) • Two Serial ATA IDE connectors, which support one device per connector D865GLC Motherboard Manual 20