Description Add up to 4 peripherals quickly and easily with the Sabrent HB-MCRM USB 2 0 Hub Especially great for notebooks which come with only a few ports in an era when you need to attach many USB devices at once such as a printer card reader cell phone iPod thumb drive mouse keyboard or an external hard drive Achieve full 480 Mbps on each port or daisy chain multiple hubs to a maximum of 127 devices Fully backwards compatible with the USB 1 1 products Please Note For a stable connection the devices connected to the 4 Port Hub must not exceed a combined current of 5 volts 500mAh External hard-drives should be connected to an external power source This 4 Port hub will not charge an iPad (it will only sync) Features * Data transfer speeds up to 480 Mbps * Four downstream ports support high-speed (480Mbps) full-speed (12Mbps) and low-speed (1 5Mbps) * Supports up to 127 devices by daisy-chaining multiple hubs * Some power-intense USB devices may require a AC-Powered USB hub System requirements * Mac OS 9 1 & higher * Windows 98SE /ME /2000 /XP /Vista /7/8 * Linux 2 4 or above Package contents * USB 2 0 4-port hub This product comes with a one year In order for us to properly assist you please follow these simple instructions Go to sabrent /support and click ‘Submit a ticket’ Submit your ticket You must include your Order ID# number in the subject line