JTD Superspeed USB 3.0 4 Port (24W) Hub with 3.3 ft USB 3.0 Cable + USB Fast Smart Charger 3 Ports (MAX 5V/2.4A) 2-in-1 charging and data hub: 4 standard USB 3.0 ports with data transfer speeds of up to 5 Gbps (10 times faster than USB 2.0) plus 5V 2.4A quick charging ports and 2 5V 1A standard charging ports; Smart and safe: Communicates with your smart devices and adjusts the charging speed accordingly; also supports hot swapping. Built-in surge protector keeps both your devices and data safe; Ultra-compatible: Compatible with USB 2.0 and 1.1; no drivers required for Windows 8/7/Vista/XP and Mac OS 10.2 and above; Exclusive Smart Power Technology: 3 PowerIQ ports detect your device to deliver its fastest possible charge up to 2.4 amps per port 5V/2.4A+5V/1A+5V/1A OR 5V/2.4A+5V/2.4A+0A Free Lifetime Technical Support and 1-Year Manufacturer Warranty from J-Tech Digital.