Features: Efficient Multi Port Expansion: This usb2.0 hub transforms a single port into four distinct ports, enabling multiple accessories like storage drives, input devices, and navigation tools to work together for improved productivity. Simple Plug and Play Setup: Ready for immediate use without extra software—just plug in to expand your device's USB capacity, allowing smooth switching between peripherals for easy operating. Broad external Support: Fully functions with older USB 1.1 devices while maintaining usb2.0 480Mbps transfer speed, ensuring proper action with both previous generation and modern accessories. Compact & Portable Design: With dimensions of 48x30mm and lightweight construction, this hub is ideal for mobile specialists, offices organization, or expanding connectivity on laptops. Consistent Multi Devices execution: stable functionality across professional environments, entertainment systems, and gaming applications. Specifications: Substance: PCB + electronic components Process: accuracy molding Size: 48x30mm/1.89x1.18in Practicality: Plugs play | Driverless installation | Supports hot swappin For Offices desktop extension | Insufficient laptop interfaces | Multiple external devices (such as U disk/keyboard/mouse) Quantity： 1/3/5pcs Package Includes: 1/3/5pcs USB expansion module note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution