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2. USB - Wikipedia

   en.wikipedia.org/wiki/USB

   USB 3.0 and USB On-The-Go supply 1.8 A/9.0 W (for dedicated battery charging, 1.5 A/7.5 W full bandwidth or 900 mA/4.5 W high bandwidth), while FireWire can in theory supply up to 60 watts of power, although 10 to 20 watts is more typical.

3. IEEE 1394 - Wikipedia

   en.wikipedia.org/wiki/IEEE_1394

   In its six-conductor or nine-conductor variations, it can supply up to 45 watts of power per port at up to 30 volts, [18] allowing moderate-consumption devices to operate without a separate power supply. FireWire devices implement the ISO/IEC 13213 configuration ROM model for device configuration and identification, to provide plug-and-play ...

4. Host controller interface (USB, Firewire) - Wikipedia

   en.wikipedia.org/wiki/Host_controller_interface...

   Open Host Controller Interface (OHCI) [1] is an open standard.. Die shot of a VIA VT6307 Integrated Host Controller used for IEEE 1394A communication. When applied to an IEEE 1394 (also known as FireWire; i.LINK or Lynx) card, OHCI means that the card supports a standard interface to the PC and can be used by the OHCI IEEE 1394 drivers that come with all modern operating systems.

5. Computer port (hardware) - Wikipedia

   en.wikipedia.org/wiki/Computer_port_(hardware)

   Additionally, USB ports are color-coded according to the specification and data transfer speed, e.g. USB 1.x and 2.x ports are usually white or black, and USB 3.0 ones are blue. SuperSpeed+ connectors are teal in color. [2] FireWire ports used with video equipment (among other devices) can be either 4-pin or 6-pin. The two extra conductors in ...

6. USB hub - Wikipedia

   en.wikipedia.org/wiki/USB_hub

   Power equals voltage times current. A USB port that draws 500 mA (0.5 A) at 5 volts is drawing 2.5 watts of power. In Bus-powered USB hubs, each USB port can supply power as well as transfer data. A self-powered hub takes its power from an external power supply unit and can therefore provide full power (up to 500 mA) to every port. Self-powered ...

7. Disk enclosure - Wikipedia

   en.wikipedia.org/wiki/Disk_enclosure

   A 3.5-inch USB/FireWire hard disk enclosure with cover removed. A disk enclosure is a specialized casing designed to hold and power hard disk drives or solid state drives while providing a mechanism to allow them to communicate to one or more separate computers.