What is HL-DT-ST - RW-DVD GCC-4243N?

My T42 ThinkPad mobile includes a HL-DT-ST - RW-DVD GCC-4243N DVD/CD drive.
What is?

I bought Memorex 8x DVD+R media and my DVD drive failed to recognize it. Is there anything I can do about it?

Ran

It is a combo drive, which means it reads and writes CD-R/RW discs and only reads (does not write) DVDs.