My syster has a PC HP-Compact brand, the PC cames with DVD writer which I do not know what brand. I looks at MyComputer->device->property->hardware then it's shown: HP DVD writer 400c . I would like to know what media is worked fine on this burner. - Is this a DVD +R burner (HP used to make DVD+ format) ? - What is the max write speed ? - is this OK to used Prodisc white&silver printable media on this HP DVD writer 400c ? Thanks.