Netgear ReadyNAS Duo 500GB (1 x 500 GB) Desktop Network Attached Storage for $264.95 shipped after this $75 rebate. Here is a screenshot for your reference. It features 2 serial ATA channels, 3 USB 2.0 ports and Ethernet port, and 64MB embedded flash memory for OS. This is a higher-end network attached storage. As a comparison, Dell sells it for $399.