I got a new Iomega iConnect Wireless Data Station from Amazon recently not to waste spare hard disk drives lying around. It is a diskless NAS that comes with 4 USB ports where you can plug in  USB storage devices. I bought it because it is ARM Linux system with 256MB RAM and 512MB flash memory. To be more precise, it is Marvell Kirkwood ARM which is the same processor as SheevaPlug. Let me show you the unit with USB storage devices plugged in.