Double USB3.0 A Type Female to Motherboards 20/19Pin Box Header Slot Adapter What it does Converts a motherboard 20/19pin internal USB3.0 box header into two USB 3.0 TypeA female ports, giving you internal access to additional USBA connections without modifying the case or motherboard. Key benefits Immediate expansion: Adds two internal USB3.0 TypeA ports so you can connect USB3.0 devices directly to your motherboard header. Clean installation: Internal boxheader form factor reduces cable clutter and keeps connections tidy inside the chassis. Durable construction: Made from ABS for reliable daily use and stable performance with USB3.0 peripherals. Broad use: Designed for system builders, enthusiasts, and IT professionals who need extra internal USB ports for peripherals or adapters. Compatibility and function Connects to a standard motherboard 20/19pin USB3.0 box header. Provides two USB3.0 TypeA female ports for internal connections to USB3.0 devices and adapters. Compact boxheader design fits typical PC cases and internal mounting areas. Practical use scenarios Install inside a desktop PC to add two internal USBA ports for internal USB adapters (Wi‑Fi/BT dongles or adapter modules) while maintaining a clean exterior. Use in custom builds or server racks to provide accessible internal USBA connections for diagnostics, firmware updates, or internal USB devices. For IT technicians: expand system capabilities quickly when testing or upgrading multiple machines without needing external hubs. What to expect Simple plugandplay connection to a 20/19pin USB3.0 header; no drivers required for the adapter itself. Solid ABS housing for everyday durability; intended to work with USB3.0 peripherals as part of your existing system setup. Who it's for PC builders, system integrators, modders, and IT professionals who need an internal, reliable way to add two USB3.0 TypeA ports to a motherboard with a 20/19pin box header.