Industrial-grade protection - This USB 3.0 expansion connector is IP67 certified for water and dust resistance and the metal housing features an M22 thread design to ensure stable operation in harsh environments. Zero-Wiring Solution - This USB 3.0 panel mount adopts innovative plug-and-play panel mounting design with tool-free M22 threading and dual lock nuts enabling 3-second device integration. Dual-Function Port - USB 3.0 bidirectional male/female transmission supports 5Gbps high-speed data + simultaneous charging. Universal Compatibility - USB 3.0 male-to-female coupler works with all standard USB devices (e. g. vehicle dashboards/industrial machinery/marine equipment/security systems). Military-Grade Durability - CNC precision-machined zinc alloy certified through 10 000+ plug-unplug cycle tests.