" Other World Computing announced today 4.0GB Memory Kits for Apple's new recently announced MacBook Pro 2.2GHz and 2.4GHz models, which began shipping on June 5th. OWC Memory options of up to 3.0GB are also available for MacBook 13.3" and previous MacBook Pro 15" and 17" models. Upgrade from 2.0GB to 4.0GB for less than 1/3rd of the Apple Factory Option.
OWC memory upgrades meet or exceed Apple's electrical and mechanical design requirements. OWC is an Apple Developer Connection Premiere Member and maintains an active state-of-the-art test lab to ensure the highest product quality and reliability. OWC Memory Customers are ensured a lifetime of high-performance, reliable operation backed with OWC's Money Back Guarantee and Lifetime Advance Replacement Warranty.

OWC, an expert in the Mac memory market, has nearly two decades of experience providing memory module upgrades for Mac computers. OWC has conducted independent memory benchmarks on MacBook and Macbook Pro laptops, which show how important memory is for customers employing high-memory intensive applications, such as audio/video, photo, 3D modeling, and other applications.
The OWC 4.0GB Memory Upgrade Kit is available immediately, priced at $219.99 (configured as two 2GB memory modules). ( $215.75 on the site specials page) Additional savings are also available for customers who take advantage of OWC's trade-in program, which provides $50 cash back for the trade-in of two 1GB modules.
Get more information on MacBook Pro and MacBook memory at:
http://eshop.macsales.com/shop/memory/MacBook/DDR2/Upgrade

See OWC's memory benchmarks using memory-intensive applications, such as PhotoShop at:
http://eshop.macsales.com/shop/apple/memory/Macbook_Memory_Benchmarks"

" RT2800 (series) chipset wireless mini pci card
SparkLAN WMIR-215GN WLAN 802.11n draft MiniPCI Wifi Module - Laptop Internal Ralink RT2860 Chipset Wireless Adapter [WMIR215GN-S0]
Price: $48.95 - $54.95 ($54.95 in Qty 1)
Mfr website product page

link to a PCI slot adapter
Mini PCI to PCI adapter ($19.95)
-Yunna"

BTW - If using a Mini PCI card in a PCI adapter, you'd need an external antenna(s) also. Although some Intel-CPU Mac Mini owners used a single antenna with 802.11N card upgrades, multiple antennas are needed for MiMo.
After checking the mfr link at the reseller he sent, I found they also listed a WLAN 802.11n draft Mini PCI Module (Atheros AR5008-3NX AR5416) model WMIA-207GN:

"WMIA-207GN
WLAN 802.11n draft Mini PCI Module (Atheros AR5008-3NX AR5416)
Highlights:
802.11n draft
Chipset: Atheros AR5008-3NX AR5416
MIMO Technology
Mini PCI Type IIIB
Windows 2000/XP
Backward Compatible with 802.11b/g"

The Core 2 Duo MacBook/Pros ship with an Atheros AR5008 card (although it's Mini PCI-e), but I wonder about the drivers and Apple 802.11n enabler (i.e. are they Intel-only). Otherwise it would be an option for Mini PCI card based PPC Macs like the Mac Mini and iMac G5 (IIRC they used a Mini PCI card) and perhaps the G5 towers. But again the question is drivers. (And for MiMo, you'd need to add another Antenna.)
If the drivers were PPC compatible it would be interesting to know if the PCI adapter card for Mini PCI cards would work for use in other Macs also. If anyone risks buying one of these to try it (although again I suspect the apple drivers are for Intel-cpu Macs only), let me know.

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