NEC should use the same drivers everyone else does. The
drivers are developed by the USB consortium, which
Microsoft is a member of.
http://www.usb.org/home
If NEC offers them, they got them from Microsoft or
USB.org.
They install automatically with SP1.
If you installed SP1 and it still doesn't work, my guess
would be that you need to install your busmaster drivers
from your motherboard manufacturer website. Without the
proper busmaster drivers, things don't seem to fully plug-
n-play. It could concievably throttle you back to USB1.1.
This might be what you mean by "NEC USB2.0" because the
proper busmaster will include a plugin for USB.
If you don't want to install SP1 and only want the USB
files, then you can download SP1 and expand the service
pack.
If you download SP1, and it's named "xpsp1a_en_x86.exe",
then you can copy it to a folder; say C:\SP1.
To expand the service pack, you can type the following:
C:\SP1\xpsp1a_en_x86.exe -x:C:\SP1\SP1_XPanded
Then try going to Device Manager and update the drivers
for your USB hardware and point the driver wizard at the
SP1_XPanded folder.
Files needed for USB1.1, USB2.0, and 1394Firewire:
\System32 folder
hccoin.dll
stobject.dll
storage.dll
storprop.dll
streamci.dll
svchost.exe
upnp.dll
upnpcont.exe
upnphost.dll
upnpui.dll
usbmon.dll
usbui.dll
\System32\Drivers folder
1394bus.sys
acpi.sys
arp1394.sys
atapi.sys
enum1394.sys
isapnp.sys
nic1394.sys
nwrdr.sys
ohci1394.sys
pci.sys
pciide.sys
pciidex.sys
serenum.sys
serial.sys
stream.sys
swenum.sys
udfs.sys
usb8023.sys
usbcamd.sys
usbcamd2.sys
usbd.sys
usbehci.sys
usbhub.sys
usbohci.sys
usbport.sys
usbscan.sys
USBSTOR.SYS
\INF folder
usb.inf
usb2.cat
usb2.inf
usbport.inf
usbprint.inf
usbstor.inf
