Specification:

Chipset: NEC

Features:

* USB 1.1 and 2.0 Compliant

* Fully Backward Compatible with USB 1.1

* Up to 480 Mbps (Megabits-Per-Second) Data Transfer Rate

* 40 Times Faster Than The USB 1.1

* Four Independent, Fully Functional, Downstream Ports

* Hot Swappable Plug-n-Play

* 4 USB Type A Ports

* Supports high-speed (480Mbps), full-speed (12Mbps), and low-speed (1.5Mbps) data transfer modes

* Supports simultaneous operation of multiple high-speed USB 2.0 and USB 1.1 devices

* Hot-swapping feature allows you to attach/detach USB devices without powering your computer off

* Support Windows 2000, XP, Vista 

Bus Interface: USB 2.0

Connectors: 4 x Typa A USB ports

System Requirements:

* PC: Windows® 2000, XP, Vista (Available USB 2.0 port)

* Mac: Mac OS 8.6 or greater. Requires OS X for USB 2.0 support  (Available USB 2.0 port)

Accessories: 1 x Manual, 1 x USB Cable