4-port USB 2.0 Hub, LED light and individual switches, Reverse compatible USB 2.0 and USB 1.1, Easy to setup, Especially great for Laptops which only a few ports when you need to attach many USB devices, such as card reader, cell phone, iPod,mouse, keyboard, or a printer. 480 Mbps on each port can meet the requirements and chain multiple hubs to a maximum of 127 devices. Fully backwards compatible with the USB 2.0/1.1/1.0 products. Data transfer speeds up to 480 Mbps Four output ports support high-speed (480Mbps), full-speed (12Mbps), and low-speed (1.5Mbps) 4 Individual power switches and led lights Each port has individual Switches. Just press on/off to connect and cut off, Very convenient. And led lights also show the status of usb power. Length of cable: 15 inch Some power-intense USB devices may require a AC-Powered USB hub Supports up to 127 devices by daisy-chaining multiple hubs Support for Laptop, Keyboards, Mice, USB Printer, Scanner or other usb 2.0 capable devices System requirements: Windows 2000/2003/ME/XP/Vista, Mac OS 8.1or above Please Note: For a stable connection, the devices connected to the 4 Port Hub must not exceed a combined current of 5 volts and 500mAh. External hard-drives should be connected to an external power source. As low input current, suggest not to charge your devices with this hub, or it would cost long time. Package: 4-port USB 2.0 hub
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