Packet Sniffers is free for Windows 2003 / Vista / 2008
packet sniffer is often used to analyze network traffic. the reason for using packet sniffer is to configure the nic to work in a mode called 'promiscous'.
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USB 3.0 port is the mainstream of 2012?
usb 3.0 port brings data transfer capability 10 times higher than usb 2.0 and may become the mainstream in 2012.