USB Compatibility

Build a PC
By rjshenal
Jan 25, 2004
  1. Hello All:

    Not quite sure where to put this, so I'll start here.

    My current computer has USB 1.1. If I purchased a USB external HDD which today would be USB 2.0, I'm sure, would the USB 2.0 HDD be campatible/work with the USB 1.1 on my computer?

    Thanks in advance
  2. StormBringer

    StormBringer TS Rookie Posts: 2,871

    no, a usb 2.0 device needs a usb 2.0 compatible port. USB 2.0 ports however, will work with older 1.1 devices.
  3. Nodsu

    Nodsu TS Rookie Posts: 9,431

    There are external drives that support both 1.1 and 2.0 USB. You just have to look at the specs.
  4. Rick

    Rick TechSpot Staff Posts: 6,308   +52

    USB 2.0 devices are backwards compatible with USB 1.1. It will run a greatly reducded speed though.

    So, yes... Your external 2.0 drive will work and will work fine on an older computer. It will just be slow.
  5. RealBlackStuff

    RealBlackStuff TS Rookie Posts: 8,165

    Just buy an internal PCI-card with USB2 from e.g. Belkin.
    Attach that HD to it and you have a new uncle (Bob)
  6. rjshenal

    rjshenal TS Rookie Topic Starter Posts: 18

    Thanks for all the info...really appreciate it,
    If I get a USB2 card and install it, what happens to the old USB 1.1 that is already installed? I have my printer connected to the USB 1.1, will it still work?



  7. Nodsu

    Nodsu TS Rookie Posts: 9,431

    It will work fine (in theory anyway)
  8. Arris

    Arris TS Evangelist Posts: 4,763   +155

    Yes your USB 1.1 controller which is on your motherboard will still function as it always has, whilst the PCI USB 2.0 controller card will operate independantly through the PCI bus.
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