Input supply voltage for cd drive?

[hasnat]

Hello,

 

[constepatdyak]

wont be much at all...few watts like 10

 

[psaus]

^ agreed for wattage

Some SATA CD-ROMs should just draw on the 5V line, but most (especially burners) will draw from the 12v line as well.
I've heard rumor that some superslimline/green style devices will draw from the 3v, but I've never seen them.
This is a good reference, but not 100% applicable
http://www.allpinouts.org/index.php/Serial_ATA_(SATA,_Serial_Advanced_Technology_Attachment)

we need to know exactly which CDROM device you're investigating...