Qnap TS-419P+-US 4-Bay USB 2.0 NAS Server CPU Marvell 6282 1.6GHz DRAM 512MB DDRIII RAM Flash Memory 16MB HDD 4 x 3.5" and 2.5" SATA II HDD HDD Tray 4 x hot-swappable tray LAN Port 2 x Gigabit RJ-45 Ethernet port LED Indicators Status, LAN, USB, eSATA, HDD 1, HDD 2, HDD 3, HDD 4