Firewire
Firewire is the popular name of hardware using the IEEE1394 standard for connecting to a host system. Much like USB, Firewire is commonly used to attach storage devices and other external media. Firewire connectivity is available for a large variety of systems, and is frequently included by default in many Sun Microsystems and Apple workstation computers.
Some recent controversy centered around the development of a tool, here which is capable of dumping a system's memory via a firewire port.