Usb 2.0

By rjshenal
Jan 31, 2004
  1. Hello:

    If I buy a USB 2.0 card and plug it into a PCI slot, wouldn't the 480 Mega bits per second be limited to 133 Mbs by the PCI bus?


  2. Rick

    Rick TechSpot Staff Posts: 4,572   +65

    It will, but it is different.

    The PCI bus offers 133 megabytes per second, where USB 2.0 offers 480 megabits second. The difference being there are 8 bits in a byte, meaning USB 2.0 really gives about 60MB/sec transfer.

    So no, you will not be limited. Mbps (megabits) is just a marketing gimmick for people who aren't able to spot the difference between Mbps and MB/sec.

    Also, firewire is 400Mbps.
  3. ---agissi---

    ---agissi--- TechSpot Paladin Posts: 1,978   +15

    Great post Rick, it was a good read!
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