What kind of expansion slots are provided by the "Unibody" MacBook Pro? Which have ExpressCard/34 and which have SD Card slots?

15-Inch MacBook Pro models -- "Unibody" and otherwise -- released prior to June 8, 2009 include a single ExpressCard/34 expansion slot. All 17-Inch MacBook Pro models include a single ExpressCard/34 expansion slot as well.

However, on June 8, 2009, Apple released the "Mid-2009" series and the 13-Inch and 15-Inch models -- the MacBook Pro "Core 2 Duo" 2.26 13" (SD/FW), "Core 2 Duo" 2.53 13" (SD/FW), "Core 2 Duo" 2.53 15" (SD), "Core 2 Duo" 2.66 15" (SD), and "Core 2 Duo" 2.8 15" (SD) -- have an SD Card slot but do not have an ExpressCard/34 slot.

Also see:

• What is ExpressCard/34? Is it compatible with PC Cards?
• What is the difference between ExpressCard/34 and ExpressCard/54? Speed?

Can you upgrade the processor in the "Unibody" MacBook Pro?

No. All MacBook Pro models -- "Unibody" and otherwise -- have the processor soldered to the motherboard. It is not upgradable.

What are the capabilities of the optical drive provided by the "Unibody" MacBook Pro models?

All "Unibody" MacBook Pro models have an 8X slot-loading "SuperDrive" (DVD±R DL/DVD±RW/CD-RW). This drive is capable of reading and writing dual-layer and single-layer DVD as well as CD media.

What is the maximum supported resolution for an external display connected to a "Unibody" MacBook Pro?

All "Unibody" MacBook Pro models -- regardless of release date -- have a "Mini DisplayPort" that supports an external display at 2560x1600. Please note that Mini DisplayPort only supports VGA, DVI, and dual-link DVI connections with adapters.

Also see: What is "Mini DisplayPort"? Is it an industry-standard? How is it different from Mini-DVI and Micro-DVI?