The device manager shows "HP CD-Writer+ 9500"
And some googling suggests that it may be a Sony CRX160e but when looking at the Sony, the holes, leds and buttons don't seem to line up.http://www.kuroutoshikou.com/products/drive/crx160e.jpg
Here is a picture of the drive in question. (All the small details match the drive here)
That has a rather "Philips" look to it - there was a site that dissected their multiple rebrands, but I can't find it now.
This is funny. I pulled the drive out of the PC and looked on the label and there it is clear as dayHP C4502CRX160E
I guess I didn't expect them to be so open about it.
No luck on updated firmware though. I checked CDFREAKS and Sony.