Main Point of 4 port USB Hub:
*Sleek Apple-style design ideal For Mac Pro, iMac, MacBook Air, MacBook Pro, MacBook, and Mac mini
*Adds 4 USB 3.0 ports to your computer, Apple-style design ideal for Mac Pro, iMac, MacBook Air, MacBook Pro, MacBook, and Mac mini.
*Apple-style aluminum finish creates a natural extension to your Mac. Palm-size and lightweight design effectively saves space, yet doesn't overload your pocket or bag, take a mobile USB work station anywhere you go
*Easy to set up, Plug-n-Play, Hot swappable, Hot pluggable
*This product comes with a one year manufacturer warranty.

Features of 4 port USB Hub: 
100%Brand New and High Quality 
Compact and portable size 
The USB 3.0 aluminum Hub creates a natural extension for your computer 
It can save the time of transfer files with a speedy data transfer rate (the data transfer rate: up to 5 Gbps, much faster than USB 2.0) 
It is compatible with USB 2.0 and USB 1.1 
No drivers required for Windows 8 / 7 / Vista / XP or Mac OS X 10.2 and above. 
Built-in surge protection keeps your devices and data safe. And it supports hot swapping. 

Specification of 4 port USB Hub: 
Color: Silver 
Size: 9.3 x 5.3 x 2.2cm 
Package Weight: 4.3 oz/122g 
Data transfer rate: 1.5 Mbps / 12Mbps / 480Mbps, can reach up to 5Gbps 

Compatible Modes of 4 port USB Hub: 
Windows XP / Vista / 7 / 8, Mac OS 9.1 and above, or Linux. 
Mac OS X Lion 10.7.4 users should upgrade to Mountain Lion 10.8.2 or later to avoid unstable connections. 

Note of 4 port USB Hub: 
Power Usage Alerts: 
To ensure a stable connection, don't use this Hub with high power consumption devices (those exceed a rated current of 0.9 A among all ports) , such as some large-capacity hard drives. 
This Hub is can't be used as a stand-alone charger. And, it is not compatible with iPad or any other device has an irregular requirement of battery charging 
2.4 GHz wireless devices (keyboards, mice, etc.) can't work for USB 3.0 ports. And try using a USB 2.0 connection to replace it