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Photos of a Prototype MacBook Pro with Integrated 3G Cellular Modem
Apple has developed prototypes of the MacBook Pro with integrated 3G data, as evidenced by this eBay sale showing a never-released MacBook Pro prototype.
This particular machine dates back to 2007 and is a 15" MacBook Pro Santa Rosa laptop with a 3G antenna, 3G hardware and SIM card slot built in. The machine was purchased "for parts" from Craigslist by the seller who describes the unit:
Upon removing the top case it was immediately clear this was no normal Macbook Pro: the circuit boards inside were bright red as opposed to the normal blue! Further inspection found multiple differences from the stock version, most notably a feature never seen in a Macbook laptop of any kind: what appears to be a fully integrated cellular modem and SIM slot. There is an extendable cellular antenna located at the right top side of the display assembly (The antenna is marked with "Tyco Proto / #006" when slid out), and a standard size SIM card slot located underneath the memory cover on the bottom of the machine. The SIM card board is connected to the logic board via a connector not found on production machines. The solder footprint for it is still present on the production boards and not populated, which is interesting. This would seem to suggest that it was a last minute decision to remove the cellular functionality before going into mass production. The optical drive is marked as a "Sample for Evaluation". Rather than a normal EMC Number the specifications lapel simply says "XXXX", and the serial number does not show up in Apple's online database.The seller was able to repair the machine to get it into working condition. The 3G connector is seen by the operating system, but the actual data connection is not presently functional. The auction is, of course, sold "as is" but for our purposes, the existence of such a machine is the most interesting aspect.
The laptop carries a red motherboard which is typical of Apple prototypes. We've seen this in other prototype machines that have leaked out of Apple before: prototype Mac Pro and prototype iPod touch. The seller also notes that the remnants of the SIM-card connectivity remain on the production motherboards but are not populated. It's not clear at what stage Apple decided not to pursue production of this model.
The integrated SIM card shown above means Apple had used GSM 3G technology rather than CDMA, allowing for use on AT&T and many other international networks. The 3G card itself is identified as a Dynastream ANT2USB stick according to OS X. In the prototype, Apple integrated the 3G antenna as an extendable antenna along the right side of the lid.
Apple has yet to produce such a machine with integrated 3G, but has clearly been working on possibility since as far back as 2007.
Update: "ANT" referenced in the Dyanstream ANT2USB is a low power 2.4GHz wireless protocol closer to Bluetooth than to 3G data, though that doesn't explain away the presence of a SIM slot and large antenna.
Update 2: The auction has been pulled, presumably due to a complaint by Apple.