Can't find the device to upgrade

hey guys i’ve got a problem here…I have installed a CD-ROM drive in my computer. It’s the third drive installed, I’ ve got a DVD-ROm drive and a CD-RW drive. The fact is that when I tried to upgrade the firmware this CD-ROM drive, ASUS CD-S520/A4, before installing anything appears the warning “Can’t find the device to upgrade”., but it’s recognized by my windows XP SP2.
I’m kind of newbie with this stuff, but do you guys know why this might be happening.

Thank you.

Daros