Product size: 50*43*17mm Product material: ABS Color: The existing color is black, white, Quality: pa the power supplier, test the product, guarantee the quality The claic rotary design allows for flexible use of extended USB ports on devices such as notebooks or set-top boxes with small space, beautiful enclosures, hot swappable, and low power consumption. The product is suitable for U disk, card reader, USB mouse, USB keyboard, scanner, digital camera, digital camera, USB sound card, hard disk box and other equipment, extending 4 USB interfaces, each power supply up to 300Ma, using the second On behalf of the USB HUB controller, no driver, plug and play, support up to 127 USB devices, all using first-cla high-quality electronic devices to ensure product stability. 1. USB binding 2.0 , high speed . 2. (Hi-speed) USB2.0 interface, theoretical maximum speed up to 480Mbps, and backward compatible with USB 1.1/1.0 standard specifications 3. Equipped with four sets of USB jacks with hot plug function 4. Current protection function, support overload voltage and instantaneous current protection function, safe and convenient to use 5. Work output is stable 6. Working humidity: 10% - 90% 7. Working voltage: 5V 8. Working current: 500mA 7. Working temperature: -20C - 75C 8. Storage temperature: -40C - 85C 9. Support system: Windows 95/98/2000/2003/ME/XP/Vista or Mac OS 8.1 or higher (driver needs to be installed under Windows 95/98 system)

About shippingShipping and Packaging All it will be double checked and well packed before sending.It will be dispatched within 2 business days after buyers pay for the order. It usually takes about 14 to 18 working days for delivering the package to the destination(for remote areas,it may take a little longer). Special Announcement:Please fill in the correct and detailed consignee, address and phone number in the order. For fast and correct delivery.If you do not receive order within 30 working days,please feel free to contact Customer Service before leaving Negative and Neutral Feedback, we will do our best to help you resolve the problem.TaxNo, you will only pay what is quoted as total cost at checkout, no more. You are not expected to pay any additional duties or taxes. If you are asked by Customs or our logistic partner to pay duties, please contact our Customer Service .Your 100% satisfaction is very ant to usIf the product is not on good condition, You can return this product within 14 working days, please contact customer service center before returning.FeedbackYour satisfaction is our first priorityIf you receive the order and it is in good condition,we would be grateful if you would leave us 5 star Positive Feedback for the transaction.