how many external harddrives can i have hooked up to my pc if i can have one USB multi thngs?

I have 2 internal HDs and i have 4 USB ports, what if i buy a USB multi thing so it turns 1 usb into like 4 ports, is their a limit on harddrives?

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  • 1 decade ago
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    You will only be able to run up to 128 devices on your USB bus. Each of the 4 (or however may backside/frontside USB ports you have) ports are all connected to one controller on your motherboard. The extra ports just come from an internal hub (which is also on the board). So, you can have up to 128 devices hooked up to your USB controller (128 total). However, because USB cannot provide unlimited amounts of power, most of the hubs providing these 124 (minus the 4 you already have) extra ports would have to be powered to prevent your USB bus from being overloaded. So, if you'd like to have 128 external hard drives talking to you computer through one 480Mb/s bus (actually slower because of USBs master/slave design, which is unlike IEEE1394/firewire) then do so.

    Source(s): I pulled it out of a dark (but very knowledgeable) place. No, not Canada. (for any VGCats viewers)
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  • 1 decade ago

    You can connect up to 32 devices on each usb port, as long as they have their own power source. You can also connect hard drives through your network card which has no limits of number.

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  • When USB first came out i remember reading an article that stated it could run about 70 items from one USB port, it may depend on the items themselves but i reckon you could probably run a few hard drives from it.

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  • 1 decade ago

    Usually it's 128 devices per usb port, from my understanding...

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  • 1 decade ago

    as long as you use one at the time on the same usb port not a problem..

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  • 1 decade ago

    The limit is I think 127 usb devices per controller. You are 'most likely' safe unless you are hosting Yahoo ;)

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  • Anonymous
    1 decade ago

    Theoretically USB ports (if you chain them to have enough physical ports...) can have up to 127 devices.

    Never tried it though.

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  • 1 decade ago

    No, just make sure you format each one and don't loose track of where your storing stuff. If your going to spend that much money on harddrives though, y don't you just get a new tower? It would be cheaper and a lot easier to keep track of where documents are saved.

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  • 1 decade ago

    2 for each IDE

    7 for SCSI

    unlimited for USB, at least in theory

    Source(s): i just know
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  • Anonymous
    1 decade ago

    kurticus 1 has it right. i can only affirm his good answer but maybe that will be some help plus i get 2 points. its a win-win-win.

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