Can't get USB2 driver to work with External HDD (SuSE 9.1)

[lghtslpr]

I just added two 500GB Western Digital USB2.0 external hard drives to my SuSE 9.1 box and they come up fine except they're extermely slow when copying large files. When I look in /proc/bus/usb/devices, it says the driver used for the external HDD's is "usb-storage". And it says "Spd=12," which I assume means 12Mbps.

I need it to be 480Mbps (USB2), because I need to copy about 250GB of data from the internal drive to the external drives. So I edited /etc/sysconfig/kernel and set
MODULES_LOADED_ON_BOOT="ehci-hcd"
to force the USB2 module to load before USB1, and rebooted, and it's still slow.

What else can I try to make USB2 work?

Thanks.


/////////////////////////////
// output of /sbin/lsusb
/////////////////////////////

# /sbin/lsusb
Bus 002 Device 001: ID 0000:0000
Bus 001 Device 003: ID 1058:0900 Western Digital Technologies, Inc.
Bus 001 Device 002: ID 1058:0900 Western Digital Technologies, Inc.
Bus 001 Device 001: ID 0000:0000

[lghtslpr]

It turned out I was misinformed by the vendor who sold me the motherboard. It does not have USB2, only USB1.