Features: USB hub all-aluminum body. Fine craftsmanship, Rugged metal housing protects against breakage and is more durable than plastic.Fast data transfer, 1 Port USB 3.0 Hub, 3 Port USB 2.0, Transmission of data without waiting, fast and efficient. USB charger can charge four phones at the same time, USB Hub Extensions very powerful. Mini portable and easy to carry, Keep your desk clean.More enjoyable work and play Hub Extensions meet the multi-port expansion requirements of the device.Charging, USB flash drive, mouse, keyboard. Build-in smart chips and exclusive multi - protection systems to avoid over-current, over-voltage, short circuit and high-temperature for security and excellent performance. Package Includes: 1PC x 4 Port USB Data Hub Specifications: Material: Aluminum Number of ports: 4 Data transfer rate: 5 Gbit/s Product size: approx. 8x1.6x0.7cm/3.15x0.63x0.28in Hardware interface: USB 3.0 USB 2.0 Color: gray silver note: No retail package. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you