Throw that away and buy an A2091 SCSI controller, it is the best controller for the Amiga ever m...
I'd guess any standard IDE controller can handle two devices, so the answer to your question will be yes, but I cannot help any more than this. Have you checked out some of the Amiga hardware sites:
amiga-hardware.com
amiga.resource.cx
They sometimes have downloadable manuals, etc
