The iPod Dock Connector to FireWire and USB 2.0 Cable offers Microsoft Windows PC customers up to 480 Mbps data transfer for quickly loading an entire music library on iPod. USB 2.0 is backward compatible with USB 1.1. To achieve USB 2.0 throughput speeds, a USB 2.0 supported system is required. Connect the FireWire cable up to the iPod power adapter to charge while syncing.