One USB port works better than the other

I have a brand new 2011 MBP i5. I just bought a Microsoft USB mouse and noticed that it works significantly better when plugged into one of the usb ports verses the other. Any idea on if this is a peripheral problem or a MBP hardware problem? Thanks!

I appreciate the help.
Here is what it says under More info - USB
USB High-Speed Bus:
Host Controller Location:          Built-in USB
Host Controller Driver:          AppleUSBEHCI
PCI Device ID:          0x1c26
PCI Revision ID:          0x0005
PCI Vendor ID:          0x8086
Bus Number:          0xfd
Hub:
Product ID:          0x2513
Vendor ID:          0x0424 (SMSC)
Version:           b.b3
Speed:          Up to 480 Mb/sec
Location ID:          0xfd100000 / 2
Current Available (mA):          500
Current Required (mA):          2
Microsoft® Nano Transceiver v2.0:
Product ID:          0x0745
Vendor ID:          0x045e (Microsoft Corporation)
Version:           6.34
Speed:          Up to 12 Mb/sec
Manufacturer:          Microsoft
Location ID:          0xfd120000 / 4
Current Available (mA):          500
Current Required (mA):          100
IR Receiver:
Product ID:          0x8242
Vendor ID:          0x05ac (Apple Inc.)
Version:           0.16
Speed:          Up to 1.5 Mb/sec
Manufacturer:          Apple Computer, Inc.
Location ID:          0xfd110000 / 3
Current Available (mA):          500
Current Required (mA):          100

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