Not sure. You can buy external e-sata enclosures right now, but you'll need a SATA hard-drive drive to stick in there, along with an e-sata pci card or pass-through adapter to connect the drive to the SATA headers on your motherboard. Honestly, given that you've got a desktop, why would you want an external drive, anyway? For your photos and music it makes some sense; you can just unplug the external drive and take it anywhere. Just buy another internal hard-drive if you need more space for games.