Problem with Transcend StoreJet 25M3 (2AJ1) on Asus M2N

[Prokofiev S.P.]

Hi All.

I have a problem with USB-HDD Transcend StoreJet 25M3 (USB3/2-compatible 
device)  on motherboard Asus M2N only, but do not have on another 
hardware platform. I've probed in FreeBSD 8.0 - 8.2
This problem exists only on this motherboard with FreeBSD 8, but does 
not exist with Ubuntu 10. USB2 ports are capable of "High speed" in BIOS.

dmesg:
ugen0.3: <StoreJet Transcend> at usbus0
umass0: <StoreJet Transcend StoreJet Transcend, class 0/0, rev 
2.00/0.02, addr 3> on usbus0
da0 at umass-sim0 bus 0 scbus6 target 0 lun 0
da0: <StoreJet Transcend 2AJ1> Fixed Direct Access SCSI-2 device
da0: 1.000MB/s transfers
da0: 610480MB (1250263728 512 byte sectors: 255H 63S/T 77825C)

 >da0: 1.000MB/s transfers - very slow

usbconfig:
ugen0.1: <OHCI root HUB nVidia> at usbus0, cfg=0 md=HOST spd=FULL 
(12Mbps) pwr=SAVE
ugen1.1: <EHCI root HUB nVidia> at usbus1, cfg=0 md=HOST spd=HIGH 
(480Mbps) pwr=SAVE
ugen0.2: <USB-PS/2 Optical Mouse B16_b_02> at usbus0, cfg=0 md=HOST 
spd=LOW (1.5Mbps) pwr=ON
ugen0.3: <StoreJet Transcend StoreJet Transcend> at usbus0, cfg=0 
md=HOST spd=FULL (12Mbps) pwr=ON
 >ugen0.3: <StoreJet Transcend StoreJet Transcend> at usbus0, cfg=0 
md=HOST spd=FULL (12Mbps) pwr=ON???

copy(gstat):
dT: 1.001s  w: 1.000s
  L(q)  ops/s    r/s   kBps   ms/r    w/s   kBps   ms/w   %busy Name
  ....
     1      8      6    767  125.9      2    256  125.7  100.6| da0
     1      8      6    767  125.9      2    256  125.7  100.6| da0s1
  ....

But other device looks well:
ugen1.2: <Maxtor> at usbus1
umass0: <Maxtor OneTouch, class 0/0, rev 2.00/1.25, addr 2> on usbus1
da0 at umass-sim0 bus 0 scbus6 target 0 lun 0
da0: <Maxtor OneTouch 0125> Fixed Direct Access SCSI-4 device
da0: 40.000MB/s transfers
da0: 238475MB (488397168 512 byte sectors: 255H 63S/T 30401C)

I've written about that 
http://forums.freebsd.org/showthread.php?p=128289#post128289
Please help to solve this problem.