The SBX-DUB is a peripheral slot board for CompactPCI serial systems, equipped with four individual quad port USB 3.0 controllers, providing a total of 16 USB xHCI SuperSpeed channels. Twelve USB 3.0 ports are available for rear I/O via backplane connectors. The user is provided with a choice of directing another set of four channels to the USB 3.0 front panel receptacles, or using them via the rear I/O. Each front panel connector is assigned to a separate SuperSpeed controller, thereby achieving a superior total data throughput.
The SBX-DUB is provided with a PCI Express 2.0 package switch for a PCIe x4 uplink to the host and can be installed into any peripheral slot of a CompactPCI serial backplane. A single PCIe lane is sufficient for standard operation, but optimum performance is achieved when the SBX-DUB is inserted into a CompactPCI serial fat pipe slot or a CompactPCI serial peripheral slot with support for PCIe x4.
A 16-port USB 3.0 rear I/O module is also available as a companion board to the SBX-DUB. The SBR-RIO connects to the backplane connectors on the SBX-DUB and provides 16 USB 3.0 receptacles in total: eight ports are available from the back panel and another eight connectors are provided on-board for internal usage.
The backplane connectors supply 12 V to a DC-DC converter on the SBR-RIO which delivers 5 V VBUS to the USB connectors. Power switches providing 1,5 A are individually assigned to each USB receptacle, preventing potential damage caused by overcurrent or a short-circuit.