Thanks for confirming that :-)
Looks like you can take it all the way up to a 624 and get yourself the LightScribe and LabelTag features as well!
Here are some other drives which
should be compatible. Click them to find the page I got the info from and judge for yourselves. Many of these drives have LabelFlash/LightScribe technology so can be crossflashed all the way up to IHAS624. Those without can be crossflashed all the way up to IHAS524 (you can probably use IHAS624 but they still won't have LabelFlash/LightScribe as the hardware's missing).
ASUSDRW-24B3LTDRW-24B3STHEWLETT PACKARD (HP)DVD 1270i BPIONEER (a BK suffix I think indicates that it has a black bezel, so variations of these probably all work)
DVR-219CHVDVR-219LBKDVR-219VXLDVR-S19FXDVR-S19LPLEXTORPL-L890SAQSIDDW-242SSee
here for the crossflash software links. I did read on one of the links that your SATA controller needs to be in IDE mode to perform the flash, not AHCI, just to let you know!
Add the ASUS DRW-24B1ST and DRW-24B1LT to the list, these drives could have the MTK A chipset, but any recent one should be the MTK B chipset.