MacBook Pro recommended USB port(s)
For the following laptops:
• MacBook Pro 15" 1.67GHz Intel Core Duo and Core 2 Duo
• MacBook Pro 15" 1.83GHz Intel Core Duo and Core 2 Duo
• MacBook Pro 15" 2.0GHz Intel Core Duo and Core 2 Duo
• MacBook Pro 15" 2.16GHz Intel Core Duo and Core 2 Duo
• MacBook Pro 15" 2.33GHz Intel Core 2 Duo
• MacBook Pro 17" 2.16GHz Intel Core Duo and Core 2 Duo
• MacBook Pro 17" 2.16GHz Intel Core 2 Duo
The use of USB Audio Devices on the Right-Hand USB Port Is Not Recommended.
• The 15" MacBook Pro models have 1 USB port on the left side, and one USB port on the right side.
• The 17" MacBook Pro models have 2 USB ports on the left side, and one USB port on the right side.
Due to the current USB configuration of the MacBook Pro under OS X, use of USB audio devices is supported on the left-hand USB ports only (the port or ports next to the power adapter cable). Use of such devices on the right-hand USB port is not advised because it may cause audio interrupts and/or dropped samples. However, the use of an iLok on the right-hand port has been qualified and is fully supported.
These USB port recommendations are specific to USB Audio devices only (such as the FastTrack USB or AudioPhile USB). USB Keyboard and Control Surface products do not have a recommended USB port at this time.