I have seen various websites selling the dvd writers. Some sell the Pioneer A04 and some sell the 104. Are they the same thing?

Also Pioneer have no mention of A04 or 104 on their website??

Thank for your input.

A04 = Retail.
104 = OEM.

This has been mentioned here before,
There is even a post which mentions exactly what you get with the retail version.

Thanks celtic_druid for the quick response.