MINI PCIE USB 2.0 expansion card Provides USB 2.0 signals and a 3.3V power supply, routing the USB signal to a USB hub controller and boosting the 3.3V rail to 5V at up to 1A to power connected USB devices. This enables reliable operation of basic USB peripherals from a compact expansion card. Expands two USB 2.0 interfaces through a MINI PCIE slot, allowing you to connect two USB devices or a small USB hub in tight system form factors. Form factor and compatibility: This is a MINI PCIE expansion card and requires a MINI PCIE slot on the motherboard. It cannot be installed or used in a PCI slot. Installation and usage notes: Because the USB signal is output from the computer, some screens or systems may miss the USB signal or output no signal at all, which can render the card unusable. This is not a card fault. If the internal USB bridge is damaged and you cannot use this card, you may search for whitelist tutorials to unlock the USB port. This product is suitable for users with computer skills. Use scenarios: 1) Add two USB 2.0 ports to a compact or embedded system that has a MINI PCIE slot. 2) Extend USB connectivity in a small HTPC or industrial PC where motherboard USB options are limited. 3) Provide a buspowered 5V/1A USB supply for small USB devices through a MINI PCIE slot in spaceconstrained builds.