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Thread: adding extra usb points

  1. #1
    Newbie
    Join Date
    Oct 2007
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    adding extra usb points

    hi guys,
    sorry for posting so much, i have been building computers for ages however have only started building my first car pc.

    my mini itx motherboard has only 2 usb connections,

    im wanting to run the following hardware that runs from usb:
    GPS Receiver
    Touch Screen (Usb needed for touch screen to work)
    Bluetooth Adaptor for mobile phone
    And maybe a wireless internet card

    is it as simple as connecting a usb hub or will this not provide enough power for my device,
    also will the m2-atx / m2-atx-hv be appropriate for this setup.

    Regards
    Will

  2. #2
    Newbie shaggy_5420's Avatar
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    Feb 2006
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    Near St. Louis, MO
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    What model motherboard do you have? Do you know if it has any on board USB headers, for adding additional USB ports? You will have to check the specifications for each device that you are intending on attaching to your system, and then check the specs on your motherboard to see what your tolerances are.

    As for hubs some are better than others, you can look into using powered hubs, but then you have to worry about powering the hub. Most of the hubs I have seen are 5v so you can get away with powering from your power supplies 5v rail, but make sure you know what you are doing. There are also self powered or bus powered hubs that require no additional power supply aside from the USBs power. If you go this route you will have to know what your current draw is and see if your motherboard can hack it.

    Again I think we would need more information on what motherboard and processor you intend on using, along with any drives, etc. before starting to guess whether or not either of the power supplies you mentioned would work. Let me know what you have to work with and I will try my best to help you answer your question.

    And before DarquePervert tells you, like he told me... SEARCH, Search can be your best friend. I know you will read it all over on here, but seriously I found there was so much information already out there, and most every subject that I can think of there is probably a thread on here for. I hope I can / did help.
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  3. #3
    Newbie
    Join Date
    Oct 2007
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    28
    hi mate,
    thanks for your help.

    the motherboard im using is a VIA EPIA-M10000 Mini ITX Motherboard with the C3 integrated 1.0GHz CPU running 1GB Memory and 160GB HDD.

    I will also be using a M2-ATX 160w dc-dc power supply

    the motherboard has 2 usb 2.0 ports on the back and set of jumpers for another 2 usb 2.0 to be connected.

    This is what i am wanting to run:

    gps receiver
    touch screen
    bluetooth connection for mobile phone
    HQCT am/fm radio tuner

  4. #4
    Variable Bitrate Bimmerstyle's Avatar
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    Sep 2006
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    Belgium
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    Your board should have one in board USB header for 2 usb ports. The bracket should be provided with your board. If it's possible in your setup I would definetly use this bracket for stability reasons. It depends on what type of HQCT you plan to install but if you use the first version of it, it will use this header so in that case it won't be available anymore.

    You can also add an usb hub. Many hubs have problems though with external harddisks and are also not very reliable when using hibernation/standby modes. It helps if you power the hub. You can use the 5V rail of your M2 ATX for this in most cases. Make sure what voltage your hub is but most of them are 5V.

    The M2 ATX is a good option for your setup. It has plenty of power for it. I use an M1 ATX for pretty much the same setup with an additional Soundblaster Extigy powered by it and an external HD also powered by the M1. With an M2 ATX you will not run out of power soon even when in the future you want to add some things to your install.
    BMW 525tds -Biostar I94GM-I4 -Celeron M44O 1,86GHz, M2-ATX, 1Gb, 320GB -HQCT RDS tuner -Creative Extigy -iBus controller -Lilliput 7" touchscreen -DLS Ultimate A7 amplifier -Focal 130K, 130V, 27V2 speakers

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  5. #5
    Newbie
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    Oct 2007
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    hi thanks for that, good to know im on the right track, the HQCT im looking at buying is the external unit which connects via a usb cable, also has rear and front rca outputs for an amplifier....

  6. #6
    Variable Bitrate
    Join Date
    Mar 2007
    Posts
    356
    i highly recommend you get a usb pin-to-motherboard thingy so you have direct USB and not a hub that needs power and often will not send constant power to the gps reciever.

    the intel mini itx has two seperate pin blocks for usbs', so you could have 6 usb's that are good to go.


    a lot of people have trouble with usb hubs in car computers.

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