USB 2.0 problem

Carlos Silva aka|Danger_Man| full-disclosure at
Mon Mar 21 15:27:32 PST 2005

Hi dudes,

I have a little problem with my external disk drive, my data transfer 
rate is 1.000MB/s.
I have USB 2.0 so the rate is larger, right?
Somebody has an idea how to enlarge the rate?



osiris# dmesg | grep usb && dmesg | grep da0
usb0: <Intel 82371AB/EB (PIIX4) USB controller> on uhci0
usb0: USB revision 1.0
usb1: <VIA 83C572 USB controller> on uhci1
usb1: USB revision 1.0
usb2: <VIA 83C572 USB controller> on uhci2
usb2: USB revision 1.0
ehci_pci_attach: companion usb1
ehci_pci_attach: companion usb2
usb3: EHCI version 0.95
usb3: companion controllers, 2 ports each: usb1 usb2
usb3: <EHCI (generic) USB 2.0 controller> on ehci0
usb3: USB revision 2.0
GEOM: create disk da0 dp=0xc2d96850
da0 at umass-sim0 bus 0 target 0 lun 0
da0: <USB 2.0 Storage Device 0100> Fixed Direct Access SCSI-0 device
da0: 1.000MB/s transfers
da0: 190782MB (390721968 512 byte sectors: 255H 63S/T 24321C)

osiris# usbdevs
addr 1: UHCI root hub, Intel
addr 1: UHCI root hub, VIA
addr 1: UHCI root hub, VIA
addr 2: USB 2.0 Storage Device, Acer Labs
addr 1: EHCI root hub, (0x1106)

osiris# camcontrol devlist
<USB 2.0 Storage Device 0100>      at scbus0 target 0 lun 0 (da0,pass0)

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