PCIe to 2 USB 3.0 ports 34/54 mm adapter for desktop PC mining

Features: 2-Port ExpressCard to USB 3.0 Adapter. Suitable for laptops (or computers with an ExpressCard slot). 2 USB 3.0 ports. Compatible with laptops and desktops with a 34mm/54mm port. Transfer rate: 5 Gbps. Compatible with USB standards (USB 1.1 Full Speed / 2.0 High Speed). Supports the following transfer speeds: SuperSpeed 5 Gbps, High Speed 480 Mbps, Full Speed 12 Mbps, and Low Speed 1.5 Mbps. Compatible with Microsoft Windows. Specifications: Materials: Plastic and metal. Color: Silver (see photos). Dimensions: 75 x 343 mm (approx.). Quantity: 1 adapter (other accessories shown in the picture are not included). Note: 1. Conversion: 1 cm = 10 mm = 0.39 inch. 2. Please allow for a 0-1 cm error due to manual measurement. 3. Due to differences in monitors, the actual color of the item may differ slightly from the color shown. Package includes: 1 PCI-E to USB 3.0 Adapter for ExpressCard (no retail packaging) and 1 Driver CD.