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Dell Precision M6700 Owners Thread

Discussion in 'Dell Latitude, Vostro, and Precision' started by Bokeh, Aug 9, 2012.

  1. darkydark

    darkydark Notebook Evangelist

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    USB provides 5 volts. Power provided by 3.0 ports is dependant upon design and they can provide either 150 mA or 900 mA. Also some usb 3.0 ports can be designed to provide 1.5A for charging purposes but they cant transmit any data while charging at that rate :)

    Hope that helps.
     
  2. Sgt. Slaughter

    Sgt. Slaughter Notebook Guru

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    I have the regular swipe fingerprint reader on my covet and have noticed an issue as of late....

    Just about every time when the computer is woken up from sleep state the reader never works at the windows login screen. On full boot it works fine but seems somehow it gets borked when the OS goes into sleep state and sometimes when woken up it says it can't find the reader... Haven't checked if this is the case if I just try to change users too and rule out it being a problem with waking it up from sleep...
    When it messes up it stays messed up and unresponsive hen I login too, and only resolution is to reboot the system...

    I have the latest driver from Dell's site too running windows7 ultimate.

    Sent from my EVO using Tapatalk 2
     
  3. Krane

    Krane Notebook Prophet

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    Well actually I was wondering if the above was the case when using the express card slot? For example, my express card has two USB 3.0 ports. So does the 5 volts refer to the slot or the individual ports? Where might I look for this specification?

    I just wanted to know if I can safely use both ports simultaneously, or if only one is recommended for continuous use? I can easily max out my system ports when editing A/V. Especially when two of the USB are permanently occupied with mouse/keyboard transmitter and as a micro storage drive.

    The port in the rear power my eSATA leaving the remaining two USB 3.0 for data inputs. Even one additional port would give me room for growth. Anything past that, puts me even further into the comfort zone.
    I have the same reader but I never used that thing. I tired configuring it many times on my HDX and it was just to quirky to bother with.

    Incidentally, are you going to update to W8? All those boxes made me dizzy at first but I'm starting to get used to it. I'm not saying its better than W7 (just different), however, it is noticeably faster.
     
  4. tijo

    tijo Sacred Blame

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    Expresscard has it's own specs, I was actually looking into that yesterday, but my notion about electricity are rather far. Anbyways, here's the spec sheet: http://www.usb.org/developers/expresscard/EC_whitepapers/ExpressCardWP.pdf.

    One thing I don't like about Windows 8 is that hot corners and multi-monitor support don't play nice with each other, keyboard shortcuts are a workaround, but it still needs the kinks worked out. It does boot ridiculously fast though as in instantaneous, the moment I choose to boot into win 8, bam the lock screen is there.
     
  5. Lykos

    Lykos Notebook Consultant

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    Thank you to anyone that can answer me.

    (I meant what method should be used? If I were to get this laptop is there a vBios mod or would it need to be that unofficial overclocking method, and by how much?)
     
  6. darkydark

    darkydark Notebook Evangelist

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    Voltage is not the issue when using both usb ports on any express card. Maximum current consumption is.
    Basically USB 3.0 (2.0) can operate in two states. Low powered at 150mA (100mA) and high powered state 900mA (500mA).

    Usage of both USB 3.0 ports depends on what will you connected and how much current those devices need.
    Usually portable USB 3.0 disk drives (without external adapter) require USB to operate at high powered state 900mA. (1)
    So express card slot is designed to provide a maximum of 1750 mA.
    Meaning if you connect two of those you will exceed maximum value that can be provided by express card slot.

    It all depends how power hungry the devices you plan to connect are. 2 devices operating at a high power state are a no go. Since they will try to draw more current out than they can. Which can manifest as quirky behavior and/or data loss.

    Usually devices with their own power source (3.5" disk enclosure with its own power adapter, various cameras, printers, scanners and so on) and or usb memory sticks operate at low powered state meaning you can connect those any way you wish/want.

    (1) Reason why many usb 2.0 portable drives came with Y cable is that they needed combined current from two usb 2.0 ports 500mA + 500mA gave total of 1000mA to the hard drive inside. USB 3.0 standard blew that away by saying it, let usb give 900mA as a standard so disk drives can operate with a regular cable. :)

    usb specifications

    Hope that helps :)

    If you plan to connect a unifying logitech receiver (which operates at low powered state as far as i know) you can basically plug anything else into other port without any worry that anything will burn out or something like that.
     
  7. Krane

    Krane Notebook Prophet

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    Yes, all input help, but THIS is precisely what I was driving at: Two high draw devices vs low plus high for safe continuous operation.

    As you mentioned current is the issue, and the accompanying heat were my main concerns. As I recall, my HDX used to get quite warm at that spot.
     
  8. Lnd27

    Lnd27 Notebook Evangelist

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    sorry if this question already was asked.

    what is the part number of dell m 6700 blu ray to hdd adapter? (hdd cage with can replace bd-drive)
    and will it work on dell m 6600?

    thanks
     
  9. soulfiremage

    soulfiremage Notebook Enthusiast

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    Can anyone explain to me why my laptop has problems remembering my wireless network? I go to work, it remembers the work one fine, but come home and it insists on seeing it but on being requested to explicitly join it-and have the key input YET AGAIN.

    Why?

    Anyone?
     
  10. RCB

    RCB Notebook Deity

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    Best guess: Corrupt profile. Delete and recreate a new one. Is your router SSID hidden, enable connect even if not broadcasting its name within the profile.

    Edit: Also make sure you get the key index correct or that you didn't inadvertently change it.
     
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