Features: Expands a usb3.0 port via the WWAN KEY-B slot, ideal for connecting miniature USB devices. The slot appears identical; please verify your motherboard features a dedicated 4ghz/3G networking card slot before purchasing (typically used for 4ghz modems). This product exclusively supports 4ghz networking card interfaces; other interfaces are incompatible! Only screws of the most commonly used size are included. Should the screws be too large or too small for installation, you may remove screws from other parts of your laptop for fastening. Product purpose: Converts unused 4ghz networking card slots on laptops or motherboards into usb3.0 ports. This item serves as an adapter. Some branded machines have hardware whitelists; whitelist removal is required for use. Specifications: Interfaces: KEY-B WWAN to USB-A Input : M.2KEY-B (need with USB3.0) Interfaced rate: USB3.0 5Gbps (depending on motherboard output) Supported size: KEY-B 30x42mm/30x52mm Function introduction: Pull out the motherboard USB on the USB connector Support : WIN10/11/2003 The 4ghz card slot standard includes usb3.0 and USB 2.0. 3.3V power supply. This product routes USB to the USB connector and boosts the 3.3V supply to 5V/1A to power USB devices. Package Includes: 1PC KEY-B to USB adapter card note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.