Description If you are looking for a professional and affordable USB data hub, then your research is over here. That's because our product can meet your need. Adopted of premium material, it is practical and durable for long time use. It is not easy to get deformed and bring you much convenience. Features -Color:Black -Material:Plastic, metal -Size:8.00X8.00X2.10cm/3.14X3.14X0.83in Working humidity: 10% - 90% Working voltage: 5V Working current: 500mA Operating temperature: -20 ~ 75 Celsius degree Storage temperature: -40 ~ 85 Celsius degree - Protect the host device while ensuring the stable operation of the mobile hard disk and other devices. - Small and practical, does not take up space, a good helper for business trips. - USB hubs for USB peripherals like flash drives, mice, keyboards, external hard drives, etc. - When connecting a device for the first time, you need to wait patiently for a few minutes to install the driver before it can be used normally. - High-speed USB 2.0 interface, fast transmission and backward compatible with USB 1.1 standard specifications. Protect the host device while ensuring the stable operation of the mobile hard disk and other devices. Small and practical, does not take up space, a good helper for business trips. USB hubs for USB peripherals like flash drives, mice, keyboards, external hard drives, etc. When connecting a device for the first time, you need to wait patiently for a few minutes to install the driver before it can be used normally. High-speed USB 2.0 interface, fast transmission and backward compatible with USB 1.1 standard specifications.