Syba SD-PCB-USB NEC Chipset USB 2.0 2x Ports PCMCIA CardBus, w/o AC Adaptor CardBus to USB 2.0 2-Port Host Controller Adapter Best compatibility - Based on NEC uPD720101 chip 32-bit CardBus PC Card Type II standard compliant USB 2.0 specification compliant; Open Host Controller Interface specification for USB Rev 1.0a compliant; Enhanced Host Controller Interface specification for USB Rev 0.95 compliant Data transfer rate: High speed 480Mbps, Full speed 12Mbps and Low speed 1.5Mbps External 5V DC jack for high current consumption devices