how does HP Protectsmart work?

First off I understand about accelerometers triggering the HDD to park. What I am wondering is, is that technology built into the HDD itself like the Seagate GForce Momentus HDDs, or is Protectsmart Hardware external to the HDD and located somewhere else inside the unit. The reason I am wondering is I am thinking about going up to a 7200rpm drive and I want to know if I have to get one that has the accelerometer technology built into it like the GForce Seagates do, or will any 2.5 SATA drive work with Protectsmart?

 

HP's protectsmart technology is basically an accelerometer that is attached externally from the hard drive. On my dv5z the accelerometer is a blue device attached to the hard drive bay and sits in direct contact with the enclosure containing the hard drive. Basically any 2.5" drive will work with protectsmart, as the accelerometer is external to whatever drive you have installed. To test to see that it works all I did was bang the table where my notebook was sitting and protectsmart kicked in and parked the read/write head. You will know when protectsmart intervenes because the drive light will usually change color briefly.

HP has a video about protect smart check it out here

 

thanks that's exactly what I wanted to know.