There has been some confusion about the USB support capability for the M81/M91/M91p with the Intel Q67 chipset. Some of the wording in the online publications and data sheet has led people to believe that these system natively support USB 3.0 speeds.
The M91 and M91p are the fastest ThinkCentre desktops with SATA III hard disk drive and USB 3.0*. The SATA III enables data transfer at the rate of 6GB per second, which is twice as fast as SATA II. The USB 3.0* transfers data at the speed of 625MB per second - ten times as fast as USB 2.0. ThinkCentre M91 and M91p are highly productive, supporting up to four independent displays (with discrete graphics), enabling almost an extra hour of productivity each day.
* Not a standard feature
Click here to view ThinkCentre M81, M91 and M91p publication.
The above symptom is associated with, but not limited to, the following systems:
The user must install the PCI-E USB 3.0 adapter card to achieve 3.0 speeds. Once the adapter is installed, the user must install the proper operating system drivers that can be obtained from the Lenovo support site.
TOWER PCI-E USB 3.0 Card, FH FRU 03T7030
SFF PCI-E USB 3.0 Card, LP FRU 03T7031
Visit Lenovo's marketing site to purchase the parts, if you need help, please visit the following URL for assistance:
How do I order parts or find parts information?
Refer to the link below:
USB 3.0 Host Controller Driver for Windows 7 (32-bit and 64-bit), Vista (32-bit and 64-bit), XP
The system board only supports USB 2.0.
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