The DS213air is a do-it-all home NAS that supports two 3.5-inch SATA hard drives with a maximum capacity of 8TB. PC Mag points out that you can extend the abilities of the DS213air with "packages for installing antivirus, remotely sharing data, and for adding iTunes, web, and media server capabilities." PCMag also warns that "the case, unfortunately, has a rather flimsy feel and is a hassle to remove to install hard disks." A big feature of the DS213air is its built-in WiFi, but SlashGear notes when switching to wireless, speeds "dropped to 9.82 MB/sec read and 8.34 MB/sec write." However despite the slower WiFi speeds, when using a wired connection, CNET says, "for a budget home storage device, it was indeed very fast via Gigabit Ethernet."