SIIG Hi-Speed USB 4-Port Bay Hub * Easy-to-access device bay design provides four high-speed USB 2.0 ports for connecting devices in front of system * Can be installed in any available 3.5 or 5.25-inch (by using the included 5.25-inch mounting rack) device bay * Works with various types of USB 2.0/1.1 devices including digital cameras, CD-RWs/DVD-ROMs, MO drives, removable drives, flash USB drives, PC video cameras, digital cameras, memory card readers/writers and more * Chip: NEC * Regulatory approval(s): FCC Class B (DoC) & CE * RoHS compliant * Fully compliant with USB 2.0 specification revision 2.0 * Supports high-speed (480Mbps), full-speed (12 Mbps) and low-speed (1.5Mbps) data transfer modes * Supports simultaneous operation of multiple USB 2.0/1.1 devices * Hot-swapping feature allows you to attach/detach USB 2.0/1.1 devices without first powering your computer off