T420's dropping USB connections

I've gotten several reports from users within our organization of losing the usb connection on their T420 series of laptops (also a couple of reports on desktops).  They have the latest USB drivers installed.  It seems to be random (making it difficult to really find the issue) and many times unplugging the device and plugging it back in resolves the issue but in many cases the laptop needs to be rebooted.  Has anyone seen this issue or any suggestions?  Let me know if you need additional information.  I don't really have any event logs to offer right now as most of the time the users aren't keeping track of when it happens and notify us well after the fact.

Hi Mfergel,
Thank you for the reply!
There is one more option to speed up the data transfer rate, but you have make sure that you are using USB safety remove option for that.
In Device Manager, right-click the USB drive in Disk drives folder, then select Properties, switch to Policies tab, and choose Better performance. Click OK to keep it.
NOTE: If you use this method, make SURE you use the sub removal tool that pops up in your system tray when you first plugged in the device (system tray is the little area near your clock on the task bar)
Hope this helps.
Best regards,
Hemanth Kumar
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    Akku-ID
    1F11LGC_LGCX863568
    Hersteller
    LGC_LGC
    Seriennummer
    1F11
    Chemie
    LION
    Langfristig
    1
    Versiegelt
    0
    Zyklusanzahl
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    Vorgesehene Akkukapazität
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    false
    S2-Standbymodus unterstützt
    false
    S3-Standbymodus unterstützt
    false
    S4-Standbymodus unterstützt
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    0
    Index
    0
    Leerlaufstatus - Anzahl
    11
    Leerlaufstatustyp
    Micro-Energiemodul-Plug-In
    Nennfrequenz (MHz)
    2301
    Prozentuale maximale Leistung
    100
    Prozentuale niedrigste Leistung
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    Prozentuale niedrigste Drosselung
    3
    Leistungssteuerelementtyp
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    0
    Index
    1
    Leerlaufstatus - Anzahl
    11
    Leerlaufstatustyp
    Micro-Energiemodul-Plug-In
    Nennfrequenz (MHz)
    2301
    Prozentuale maximale Leistung
    100
    Prozentuale niedrigste Leistung
    32
    Prozentuale niedrigste Drosselung
    3
    Leistungssteuerelementtyp
    ACPI-Leistungszustände (P)/ACPI-Drosselungszustände (T)
    Funktionen der Plattformenergieverwaltung:Funktionen zur Prozessorenergieverwaltung
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    Gruppieren
    0
    Index
    2
    Leerlaufstatus - Anzahl
    11
    Leerlaufstatustyp
    Micro-Energiemodul-Plug-In
    Nennfrequenz (MHz)
    2301
    Prozentuale maximale Leistung
    100
    Prozentuale niedrigste Leistung
    32
    Prozentuale niedrigste Drosselung
    3
    Leistungssteuerelementtyp
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    0
    Index
    3
    Leerlaufstatus - Anzahl
    11
    Leerlaufstatustyp
    Micro-Energiemodul-Plug-In
    Nennfrequenz (MHz)
    2301
    Prozentuale maximale Leistung
    100
    Prozentuale niedrigste Leistung
    32
    Prozentuale niedrigste Drosselung
    3
    Leistungssteuerelementtyp
    ACPI-Leistungszustände (P)/ACPI-Drosselungszustände (T)
    Gerätetreiber:Erfolgreiche Analyse
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