iPod model PA446LL

I have iPod model number PA446LL. Is this a g5 or g5 enhanced iPod? It has the search function and the numbers match that of the 30gb g5e, but the more common prefix is 'MA'. The 'PA' model is not listed in any databases I can find. I'm looking to upgrade it with a 240gb hard drive.

List of iPod models:

(http://www.everymac.com/systems/apple/ipod/ipod-faq/ipod-nano-mini-shuffle-apple -model-numbers.html)

Thanks!