>If it doesn't have a standard Kensington slot you might need to contact Sony to see if they have any proprietary solution. Some alternatives are discussed at http://en.wikipedia.org/wiki/Kensington_Security_Slot#Alternatives .

It is rare, but it does not have one.

The alarm approach is more widely used now. I have seen a lot of stores turning into that direction. Probably because it is less hardware to deal with and easy to negotiate. While the alarm is good, within 5 seconds, someone can easily be off scope running away with the laptop.

As far as using popular ports, I have to say that all of them are already taken on the laptop. :)

But, I will have to give them a call to see about what they would recommend. They might have something not widely known or sort of.