I am building a new computer based on an ASUS P5Q Pro. This board has only one IDE connector, I plan on putting my current 200GB IDE and my DVD writer on this connector and putting a new WD, SATA 640 GB on one of the SATA connectors.
I also have another IDE HD and another DVD writer that work fine. Do you think this adapter would let me use these two devices without any problems.
You don't really need any extra drive or RAID controller. You can connect two IDE devices directly on a single IDE cable, but this'll slightly reduce their performance if you try to use 'em on the same time. Just use your new 640GB for the OS and connect those 2 IDEs on a single cable, you'll be just fine.
Info : I have turned my Seagate IDE 80GB and my IDE Plextor DVD-RW into portable devices in combination with Scythe kama connect 2.
I have bought new SATA devices to replace 'em.