Silverstone Tek PCI Express Card with USB 3.0 Internal Connector (EC01) Supports standard USB 3.0 internal connector PCI Express gen 2.0 with single lane(x1) throughput 5Gbit/s Supports simultaneous operation of multiple USB 3.0/2.0/1.1 devices Offers up to two external USB 3.0 super speed ports Support 5V bus power from computer's power supply Build in power connector to receiving extra power from system