Netgear ReadyNAS Duo 500GB Network Attached Storage for $264.95 Shipped

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.