Saw that too in a shop here in Causeway Bay. Yup, it's a cooler of some sort. Unfortunately, they only had stock for the 12 & 15 inchers (books, that is). Here's a link to the product, though the description is kinda short.
"Sale, it is the PowerBook cooling fin of completely new type from power support.
Besides the fact that you install in the base of PowerBook, placing the substance, you can use.
Using the temperature conductivity silicon seat to the contact part of the aluminum and the substance in the material.
"-4 ℃" with sort of the unique naming which is said, there is an effect which holds down the heat generation of the substance which the occasion where long haul you use PowerBook becomes matter of concern, substantially.
The cooling effect of course, being unique, the design which is settled in the compact charm.
For light weight, it is convenient to also conveyance.
Of the new 4 types respectively exactly 4 versions good size are prepared, adjust to PowerBook of errand and can choose.
For New iBook (color: Natural)
For PB 2400 (color: Black)
For PB G3 (color: Black)
For PB G4 (color: Natural)
It to be, as for this commodity for PB G4 (the color: Natural) it becomes.
* -4 ℃ it is the result of the test inside the company power supporting, this preservation it is not something which is proven."
Somehow, I think the manufacturer's exaggerating, especially with the -4 deg Celsius claim. I doubt it can even lower the temperature to 20 degrees, hehe. :-)
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