Mac mini, mid 2010 (A1347) memory upgrade.

I have a Mac mini, mid 2010 (A1347) with 2 Gb of memory. When looking to upgrade the unit's memory, I noticed the memory installed in the mini is labeled: PC3-8500S instead of the PC3-10600, like is specified in Apple support for this model. Question: What model mini do I actually have and what type of memory should I be using in it?

It is the low-profile style but with a superdrive.