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[C840] No USB2.0 on Windows XP
Hi,
I've noticed that my Latitude C840 laptop should support USB 2.0 but I when I plug a USB 2.0 device, Windows XP (SP2) tells me that this device will runs at low transfer rate and it does :(
Have you any ideas?
I've noticed that my Latitude C840 laptop should support USB 2.0 but I when I plug a USB 2.0 device, Windows XP (SP2) tells me that this device will runs at low transfer rate and it does :(
Have you any ideas?
Ed C
3.2K Posts
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January 26th, 2006 09:00
speedstep
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9 Legend
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January 27th, 2006 12:00
http://support.dell.com/support/systemsinfo/documentation.aspx?c=us&cs=19&l=en&s=dhs
http://support.dell.com/support/edocs/systems/latc840/
Enhanced Host Controller Interface Specification for Universal Serial Bus
The Enhanced Host Controller Interface (EHCI) specification describes the register-level
interface for a Host Controller for the Universal Serial Bus (USB) Revision 2.0
Intel 82801DB/DBM USB EHCI
82801FB/FBM/FR/FW/FRW (ICH6 Family) USB2 EHCI
Intel® E7205 Chipsets Intel® ICH4 (82801 DB)
Intel® 875P Chipsets Intel® ICH5 / ICH5R
Intel® E7505 Chipsets Intel® ICH4 (82801 DB)
Intel® E7320 Chipsets Intel® ICH5 / ICH5R
Intel® E7520 Chipsets Intel® ICH5 / ICH5R
Intel® E7525 Chipsets Intel® ICH5 / ICH5R
Intel® E7221 Chipsets Intel® ICH6R
Intel® 925XE Chipsets Intel® ICH6
Intel® 925X Chipsets Intel® ICH6
Intel® 915G Chipsets Intel® ICH6
Intel® 915P Chipsets Intel® ICH6
Intel® 915GL Chipsets Intel® ICH6
Intel® 915GV Chipsets Intel® ICH6
Intel® 915PL Chipsets Intel® ICH6
Intel® 910GL Chipsets Intel® ICH6
Intel® 875P Chipsets Intel® ICH5 / ICH5R
Intel® 865G Chipsets Intel® ICH5 / ICH5R
Intel® 865PE Chipsets Intel® ICH5 / ICH5R
Intel® 865P Chipsets Intel® ICH5 / ICH5R
Intel® 865GV Chipsets Intel® ICH5 / ICH5R
Intel® 848P Chipsets Intel® ICH5 / ICH5R
The C840 Controllers are USB 1.1
Host bridge Intel Corp. 82845 845 (Brookdale) Chipset Host Bridge (rev 4)
PCI bridge Intel Corp. 82845 845 (Brookdale) Chipset AGP Bridge (rev 4)
USB Controller Intel Corp. 82801CA/CAM USB (Hub #1) (rev 2)
USB Controller Intel Corp. 82801CA/CAM USB (Hub #3) (rev 2)
PCI bridge Intel Corp. 82801BAM/CAM PCI Bridge (rev 66)
ISA bridge Intel Corp. 82801CAM ISA Bridge (LPC) (rev 2)
IDE interface Intel Corp. 82801CAM IDE U100 (rev 2)
Multimedia audio controller Intel Corp. 82801CA/CAM AC'97 Audio (rev 2)
Modem Intel Corp. 82801CA/CAM AC'97 Modem (rev 2)
VGA compatible controller nVidia Corporation NV17 [GeForce4 440 Go] (rev 163)
Ethernet controller 3Com Corporation 3c905C-TX/TX-M [Tornado] (rev 120)
CardBus bridge Texas Instruments PCI4451 PC card Cardbus Controller (rev 0)
CardBus bridge Texas Instruments PCI4451 PC card Cardbus Controller (#2) (rev 0)
FireWire (IEEE 1394) Texas Instruments PCI4451 IEEE-1394 Controller (rev 0)
Message Edited by SpeedStep on 01-27-2006 09:24 AM
_Raynor_
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January 27th, 2006 15:00
I'll use FireWire instead.
Thanks for your answers.