Feature: 1. MULTI PORT: Expand one USB port on computer to 16 USB2.0 ports, supporting simultaneous operation without pressure. Plug and play, no driver required, easy to use. 2. MAIN FUNCTION: Suitable for batch downloading, testing, production, and data copying of USB products such as USB flash drives, card reader, memory cards, and mobile hard drives. 3. HIGH SPEED TRANSMISSION: Supports data transmission speeds up to 480Mbps, ensuring efficient and fast data transfer, bring you a professional experience. 4. WIDE COMPATIBILITY: Compatible with USB 2.0, 1.1, and 1.0 devices. Compatible with for Windows XP, for Vista 7 8, for OS X with USB support. 5. DOUBLE CIRCUIT GUARD: Each USB port has short circuit alarm function, red LED indicator warns of short circuit in the inserted USB device. With overvoltage guard and overcurrent guard. Specification: Item Type: 16 Port USB2.0 HubMaterial: ABSProduct Model: A-100 Data Transfer Speed: Up to 480Mbps Interface: USB2.0 x 16 Output Detail: 5V 300MA Size: Approx. 182x123x25mm / 7.17x4.84x0.98in Power: 5V 3A desktop power supply LED Indicator: Blue LED lights, each LED indicator corresponds to the respective USB working status Supported Systems: For Windows XP, for Vista 7 8 USB supported for OS X . Package List: 1 x 16 Port USB2.0 Hub 1 x USB Cable 1 x Power Adapter 1 x Power Cord Note: Memory card testing requires a card reader, not included