SIIG Hi-Speed USB 4-Port Bay Hub (JU-H42B22-S2) 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" (by using the included 5.25" 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 Fully compliant with USB 2.0 specification revision 2.0 Chipset: NEC uPD720114GA-9EU-A Provides 4 high-speed front-accessible USB 2.0 ports for device connections 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