Macally 3-Port USB 3.0 Portable Data Hub with Ethernet Network Lan Adapter for Macbook Pro / Air, Mac Pro / mini, iMac, XPS, Surface Pro, Notebooks, Desktop PCs, USB Flash Drives, etc. (U3HUBGBA) Metallic, Apple-esque finish is a stylish companion to your Mac and PC. Add 1 Gigabit Ethernet port to access lightining network (up to 125 MB/s !!) Reliable and Stable wired connection for Gaming and Streaming Add 3 USB 3.0 SuperSpeed ports to your Mac/PC and enjoy the data transfer speed of up to 5 Gbps (Real world speed up to 450 MB/s) External Hard Disk / Flashs can transfer data up to to 200 MB/s. USB 3.0 is a must. USB 2.0s limit at 40+ MB/s will hinder the performance. Backward compatible for USB 2.0 FastSpeed devices like mouse, keyboard, card reader, etc. USB 3.0 port provides enough power (up to 900mA) to properly drive high power devices like HDD/SSD Copy 8G Movie via USB 3.0 usually take less than 30 sec. USB 2.0 have to take 5 min.