Transcend 4-port PCI Express USB/Serial ATA Combo Adapter PCI Express expansion card, 2x external USB3.0 and 2x internal SATA III ports Ideal for connecting USB3.0 and SATA III peripherals USB3.0 ports up to 10X faster than USB2.0 SATA III speeds up to double the speed of SATA II PCI Express 2.0 single lane