the toshiba sd-r6112 is known for its poor compatibility
i too have this drive in my asus m6n and its driving me crazy...it can burn cds perfectly..but some blank dvd media cannot be read by it..even some burnt dvd media cannot be...
oh im sorry..i misread when you said both are the same...i mustve missed the next word size..
ask your stockist who is selling the item if it will fit in your asus..i have a strong feeling it should as a friend replaced his toshiba...
strange...i have the same toshiba dvd burner but the specs are 2X on -R/-RW..it does NOT burn dual layer discs
the nec seems to burn at 8x on +-R/+-RW including dual layer
grab the nec..as it has better features than the toshi