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FireWire & USB 2.0
Compared
Data transfer rate of 400 Mbps
FireWire is suitable for applications
where delayed or out-of-order data
frames are unacceptable, such as digital
video editing.
Supports up to 63 devices
FireWire devices can be linked in a daisy-
chain configuration. With the use of
FireWire hubs, up to 63 devices can be
linked on a single FireWire bus.
Peer-to-peer architecture
FireWire devices are intelligent. Data
transmission can take place without the
need for input from the computer.
Cable length up to 14ft
On-bus power up to 45 W
FireWire can power larger, higher power
consumption devices than USB 2.0.
Plug & Play
You do not need to install drivers,
assign unique ID numbers, or connect
terminators.
Hot-swappable
Devices can be added and removed
while the computer is running. Also, you
can turn off the device when not needed,
in order to conserve electricity.
Data transfer rates up to 480 Mbps
With USB, data transfer rates can
vary depending on a number of factors,
including available CPU resources.
Supports up to 127 devices
Connecting more than one or two USB
devices to a computer typically requires
the use of one or more hubs: each hub
can accommodate several USB devices.
Master-slave architecture
The computer dictates data flow to,
from, and between attached devices.
Cable length up to 16.5ft
On-bus power up to 2.5 W
Suitable
for
low-power-consumption
devices such as flash card readers.
Plug & Play
You do not need to assign unique ID
numbers, or connect terminators. On
most operating system you do not need
to install drivers.
Hot-swappable
Devices can be added and removed
while the computer is running. Also, you
can turn off the device when not needed,
in order to conserve electricity.
FAQs for Mac Users:
Q: Why is my drive asking me to format it? It was already
formatted and it contains data.
A1:Run a disk repair utility on the drive.
A2:Perform permission repair on your system drive. Open the
disk utility (located in /Applications/Utilities/Disk Utility.app.)
Select your system drive (usually the first disk listed) and click
"Repair Disk Permissions" in the "First Aid" Tab.
A3:Restart your computer. As soon as the bootup chime sounds,
press and hold down the option-command-p-r key combination
to reset the PRAM. Release the keys when the chime sounds
a second time. Please refer to your Mac manual for more
information on these procedures
Q: My computer does not recognize the drive.
A: Check to make sure that all of your connections are secure
and that the power switch is in the "ON" position. Then check if
your External Hard drive is listed in the Apple System Profiler. If the
problem persists, verify that the port used is functioning.
Q: I'm trying to copy files to/from FAT32 volumes or network
shares, and it keeps failing.
A: FAT32, HFS+, and other file system formats allow different
standards of filename length or use of special characters.
Rename the offending file(s) and try the operation again.
Q: I have a FAT32 disk, and when I try to copy a large file I
get an error saying there is not enough room on the drive-- I
have lots of free space!
A: FAT32 only allows files up to 4GB in size. To copy larger files,
please reformat the volume using MacOS Extended Format.
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