Hp Dvd400c

I was trying to find some information about this Philips OEM 8/4X, +R/+RW-only burner, but didn’t find much. My brother-in-law has this drive in his HP Pavilion using BH04 firmware, and he said it took him about 30 minutes to burn using RICOHJPNR01, which I’ve burned at 8X before with my 411S@811S. Thus, it must have burned at 2.4X for him, and unfortunately, he’s in another state, so I can’t use my magic to cure his slow burning time. He hasn’t updated to FH04, and probably won’t until I go back there again. If anyone can point me in the right direction about finding more information about the drive & its media support, I’d appreciate it. Thanks in advance.