Laptop PC mini PCI-e standard includes USB signal and 3.3V power supply; Lead USB signal to USB seat、 and boost 3.3V to 5V 1A for USB devices. Through mini PCI-e slot extended one USB 2.0 interface、 suitable for connecting mini USB devices. For example: USB wireless mouse receiver、 USB Bluetooth adapter、 USB Wi-Fi network adapter、 USB flash memory、 USB card reader (micro SD / M2)、 U disk Features: Through Mini PCI-e interface extend one standard USB interface、 connect USB 2.0 devices. Extended USB interface connect USB flash drive、 USB Bluetooth adapter、 Wi-Fi adapter、 etc. Compliant with USB 2.0 specification、 backward compatible with USB 1.1 Suitable for full high and half high mini card、 no driver needed. Suitable for Mini PCI-e interface and ASUS EeePC 900、 901、 902 series "Mini PCI-e" interface All USB 3.0 connector is USB 2.0 signal Dimensions: 1.97 in x 1.18 in x 0.24 in (5.0 cm x 3.0 cm x 0.6 cm) Weight: 0.18 oz (5 g)