Venue 8 - USB and Power at the same time?

Discussion in 'Dell' started by Robotica72, Nov 5, 2013.

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  1. thE_29

    thE_29 Pen Pal - Newbie

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    OK, so here the updated guide:

    http://666kb.com/i/ckz2dn2ghueqt2fv3.jpg
    In the first picture you see in the
    .) Red mark the dell power adapter + usb extension cable.
    .) Blue mark: no name y-cable from amazon.de: Wentronic USB Kabel 0,3m: Amazon.de: Elektronik
    .) White mark: DeLock y-cable which was shown in the other post also from amazon.de:
    http://www.amazon.de/gp/product/B004AK5ZI8/ref=oh_details_o06_s00_i01?ie=UTF8&psc=1

    http://666kb.com/i/ckz2k9gu8bbtrparz.jpg
    2nd picture:
    Close up picture of the DeLock Y-cable. On the red cable (USB male), which is JUST power, you plug in the charger. On the other male, you plugin the gender changer, so that you can plugin any USB device. In the female plug, you plugin the switch power/data-cable from DX.
    And here is the tricky part: If you use the WRONG male-cable to connect the power plug, you have no data line. Because 1 cable is just power support, so there should be no data wires. In most cases that cable is thinner than the other one!

    http://666kb.com/i/ckz2ssm3de2zgmbwv.jpg
    3rd picture is also the closeup of the noname Y-cable.
    Here is also the smaller cable the one, where you connect the power adapter.

    http://666kb.com/i/ckz2vvtrq1oph26dr.jpg
    On the 4th picture you see both cable-setups labeled.
    .) So you have a female USB plug where you connect a micro USB cable which then goes into the Venue 8 pro (in my case i use the original Dell cable).
    .) On the other side you have the male USB plug, where you can use any power adapter or an USB extension.

    http://666kb.com/i/ckz31ymy6mbujdk27.jpg
    On the 5th picture I have connected everything. And as you can see, I use the other Y-USB cable. In the white marks you can see the cable from DX.
    I also use an USB extension cable to connect the power adapter.

    http://666kb.com/i/ckz37kpp813kmi5e7.jpg
    The 6th picture is a closeup of the Y-cable. You can see the 2.5" HDD attached to the gender-changer and then to the Y-cable.
    The 2.5" HDD was working, but it sometimes disconnected. Although i was able to copy 400-500MB without any problems.. But i would suggest an active USB device or an active USB hub.

    http://666kb.com/i/ckz3bjz53f6ffuocv.jpg
    On the 7th picture you can see that the power source is connected. (currently it is not loading, because it is nearly full/full - it began when it was at 96).

    http://666kb.com/i/ckz3hpkusb5pddp73.jpg
    On the 8th picture you can see the connected USB 2.5" HDD (seagate extension drive) and that the power source is connected.

    http://666kb.com/i/ckz3jt96pacb2n3yn.jpg
    And on the 9th picture, i copied some files from the USB drives. Aprox. 450MB

    I hope that helps. The sources to the other cables can be found in the previous post here:
    http://forum.tabletpcreview.com/dell/59328-venue-8-usb-power-same-time-32.html#post368065
     
  2. rüdiger

    rüdiger Scribbler - Standard Member

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    @thE_29 Dont want to sound rude, but that's a complete mess you put up there with these 200 pictures. Just one sentence please, what to buy to get this done. Just the Delock Adapter Power USB Kabel 2x USB Y-Kabel?
     
  3. thE_29

    thE_29 Pen Pal - Newbie

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    No, its not a mess, because when you connect it WRONG, it does NOT WORK!! And i posted JUST the cables to order ~20 pages before and no one cared about it. So just posting the cables alone, does not help anyone..

    And if you would look at the pictures, you can also buy the no name Y-cable, because in my case, that worked too! Not just the DeLock Y-cable.


    BTW: If 10 pictures are too hard for you, then it is not my problem.. I made guides for other HW, where the procedures are about ~1hours of really working!
    But thats the biggest and annoying problem of the internet.. Noone wants to read manuals or use search functions... RTFM!!!
     
  4. rüdiger

    rüdiger Scribbler - Standard Member

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    Question: Whats the reason you need a cable with charge/data switch? What does that help if you can just switch between charging or data, dont we want to have both at the same time?
     
  5. noellenchris

    noellenchris Pen Pal - Newbie

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    The DVP8 by default can only do either charge or data one at a time. To enable both, the easiest way using cables is to add a switch. To make them work together, you have charge the dell first (tricking it sort of) then switch to Data and use external devices. DELETED
    The important things are: Cable with a switch DATA/CHARGE , the OTG cable (one enabling you to connect a USB device)
    The other cables are how ever you need to connect to a charger and connect to the device you want to use simultaneously.

    Good luck
    Chris

    EDITED OUT THE MHL ADAPTER STUFF
     
    Last edited: Jan 15, 2014
  6. rüdiger

    rüdiger Scribbler - Standard Member

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    MHL cable? The picture here http://www.fotos-hochladen.net/uploads/dvp8wireing4vz0jmkbit.jpg doesnt say anything about a special cable, except the one with the switch (B). But wouldnt it stop charging the moment you switch from charging to data? And also what was the reason Dell made it like this? Maybe a part inside the Venue can get too warm/overhead if you charge and have high data at the same time?
     
  7. thE_29

    thE_29 Pen Pal - Newbie

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    No no, because DATA = power & data wires connected. And if you switch it to CHARGER, then just the power wires are connected.

    When you plugin a micro USB cable to the Venue 8 Pro, it checks if there is a data line. If there is NO data in the cable, then it will start charging. But if you change that AFTERWARDS, it still keeps charging + you can connect something, because you have the data-wires now connected too!

    There is also a "swap" trick. So when the tablet boots, you have to swap cables very fast and the tablet will charge + support USB devices (either someone described it in that thread or in another one).

    You can see the cable with the switch in picture#5 (white mark). So before everything goes into the tablet, i have the cable with the switch, where i can cut off the data lines and the tablet will start charge. After that i switch it to DATA and it charges + has USB support.



    And noellenchris is mixing up MHL and (USB) OTG. But the tablet does NOT support OTG (as far as i know) and does MHL really work? (Update: He meant MHL and not OTG)

    What is OTG? OTG means, you can connect an USB hub or USB device to your USB connection AND it gets POWER from the device. And thats why the Venue 8 Pro has no OTG support, because it does not support connected USB devices with power (therefore you need an active USB hub or active USB devices).

    The "other" setup, where the people are using an OTG cable, has nothing todo with OTG itself because they use it completey "wrong" (normally you wouldnt plugin the OTG cable as it is described).
    Well I also use the Y-cable for something else and not what it was designed for..

    Here is the difference between "normal" USB and OTG USB cable:
    http://im.tech2.in.com/gallery/2012/jun/difference_circuit_271738111300.jpg
     
    Last edited: Jan 15, 2014
  8. noellenchris

    noellenchris Pen Pal - Newbie

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    Once the tablet is charging, it doesn't care when you move the switch. But if you connect a usb device first it will not charge. Some people have laid out the technical parts, if you felt adventurous you could open the tablet and modify the connector, or you could solder in a resistor on an existing dock that fools the tablet.

    As for the additional cable MHL, in my case I want to hook it up to a dock with video out and use the usb stuff. So if you have no plans to hook up to an HDMI or external video you shouldn't need the MHL cable for simple USB stuff. I have a couple since I use them with my Samsung Note 2 etc. to display HDMI when I run Netflix or something at a hotel.

    So If no video is needed, go with the data/charge cable and a Y cable to charge and allow to plug in regular usb stuff. Sorry for the confusion on the MHL stuff.

    Chris

    EDIT: LOOKS LIKE THE MHL ADAPTER WON'T WORK (LOOKING INTO PLUGABLE DOCK FOR DVI TO USB)
     
    Last edited: Jan 15, 2014
  9. noellenchris

    noellenchris Pen Pal - Newbie

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    Thanks. What I'm actually trying to connect is my Samsung Universal Dock. If I plug my Note 2 into the dock it charge's and gives me 3 USB's and a HDMI. So I'll test if DX ever gets my cables I need in stock...:p Otherwise I may pick up one of the Plugable docks that some are using with the DVP8, I just didn't want to drop another $100 bucks if I can use my Samsung dock. Hopefully I can get it to work. Then I can in theory kinda replace my laptop. Thanks for the pic of the OTG cable too.

    Chris
     
  10. thE_29

    thE_29 Pen Pal - Newbie

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    Well, was far as I know, the tablet does not support MHL.. But it would be great if you can try it and report the results!

    And the other problem is that the device itself has USB 3 chipset in it (it comes from Intel Bay Trail CPU), the connector is just USB 2.0... So external docks are working, but they have the speed limits of USB 2.0...
     
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