Firewire

My 3-4 year old Lian Li case has a port in front (with the USB ports) that says "I394"

This is, I think, firewire. How can I tell if it is 400 or 800?

I want to get a firewire portable drive. Seagate makes one that has optional ("flex") I/O connections (USB 2, USB 3, or Firewire).

How do I know if I can use this portable HDD? Would a HDD supporting 800 also be downward compatible with 400???

Thanks,
Ann
3 answers Last reply
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  1. Yes. It would just run slower.

    Your motherboard manual would tell you what you have.
  2. It's most likely firewire 400. The ports look different between firewire 400 & 800. A firewire 800 port is rectangular where as the 400 is sort of angled on one side.
  3. Oops. Didn't look deeply enough.

    From:
    http://www.firewire-1394.com/what-is-firewire-800.htm

    "Compatibility with Current FireWire Products
    FireWire 800 provides two modes of transmission:

    1. The pure beta mode (a FireWire 800 device connected to a FireWire 800 port with a FireWire 800 beta cable)
    2. The backward-compatible legacy mode (a FireWire 400 device connected to a FireWire 800 port or vice versa with a FireWire 800/FireWire 400 bilingual cable)

    FireWire 400 devices use a 6-pin or 4-pin connector while FireWire 800 devices use a 9-pin connector. Existing FireWire 400 devices can be plugged into either type of port with the appropriate cable. FireWire 800 devices can achieve FireWire 800 speeds only when connected to a FireWire 800 port."

    So 400 is electrically compatible with 800 but not physically compatible.

    Sorry, maggie. :(
    Thanks, Hawkeye. :)
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