All of the above will work. But if you know the basic connection and won't mind opening the case of your pc, the cheapest one you can do is remove your laptop's hard drive and connect it to your desktop pc's secondary master controller where the CD ROM drive is connected. All you need to buy is a small IDE connector for your 2.5 laptop's HDD to fit on a ribbon cable. The cost is not more than $5. Disconnect the CDROM drive and connect the small hard drive. Don't do this if you are not confident of doing it. This is what I do to save some money for my next keyboard.