MCSE = media code speed edit
it's a utility that allows tweaking of firmware (using tweaked firmware will void the warranty, but just loading the firmware into the program without flashing your drive to it is perfectly safe)
i use it mainly as a reference to see what is supported in new firmware.
i don't know if it supports the 1650 yet though.
i can tell you that BCDB for the 1655 supports 8x DL burning.