Summary 407 443 as you can see firewire does have

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Summary 4:07-4:43 As you can see, FireWire does have some advantages over USB. However, most of these advantagesonly benefit specific uses. For example, because FireWire has a constant data rate, it's used in aircraft to control and to communicate with critical flight systems. That's it for this lesson. To review, FireWire, also called IEEE 1394, is an interface standard used by computers to connect peripherals. FireWire isn't used as much as USB, but it does have some advantages, including higher power output and a constant data rate. FireWire also has two main versions you should be aware of, FireWire 400 and FireWire 800. The IEEE 1394 standard is a set of specifications for a high-performance serial bus. Companies that develop IEEE 1394 devices and controllers refer to their technology using a specific trademark. FireWire (Apple) i.LINK (Sony) Lynx (Texas Instruments) FireWire is the most commonly used name for IEEE 1394 and is typically used when referring to non-Apple technology. FireWire: Uses a serial bus using twisted-pair wiring for data transport. Supports up to 63 devices on one IEEE 1394 bus. Capable of isochronous data transmissions, which provides a constant, uninterrupted bandwidth. Supports plug and play and hot plugging (devices can be added and removed without rebooting). Provides up to 60 W of power via a 12 V wire. Supports peer-to-peer transfers (e.g., data can be transmitted between a digital video camera and a recording device without going through a computer).
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The following table describes the details of common IEEE 1394 standards. Version Description 1394 (FireWire 400) Supports speeds of 100, 200, and 400 Mbps Maximum cable length of 4.5 meters (15 feet) 1394a Clarifies and enhances the original standard 1394b (FireWire 800) Supports speeds of 800, 1600, and 3200 Mbps Maximum cable length of 100 meters (328 feet) Also called FireWire 800 1394.3 Added peer-to-peer data transmission support You should know the following facts about IEEE 1394: An IEEE 1394 bus does not necessarily include a PC. In other words, various types of devices can potentially act as the root host. The devices on the bus decide the root host each time a device is added or removed from the bus. The maximum number of hops (other devices) between any two devices is 16. You cannot connect IEEE 1394 devices to form a loop. IEEE 1394 devices can be bus powered or self-powered. IEEE 1394 cables with four wires are not self-powered; IEEE 1394 cables with six or nine wires are self-powered. The following table describes the common IEEE 1394 connectors: Connector Description 6-pin connector The 6-pin connector is used with FireWire 400 devices. 6-pin FireWire connectors provide power via a 12 V wire. 4-pin connector The 4-pin connector is used with FireWire 400 devices and does not provide any power. Devices that use this connection must be self-powered.
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9-pin connector The FireWire 9-pin connector is used with FireWire 800 devices. This connector is most commonly found on Apple computers, such as the MacBook Pro.
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