Internal 4x 2.5 "/ 3.5", SATA 6Gb / s, hot-swap, External 4x Gb LAN, Additional ports 2x USB 3.0 (host), 1x expansion port, 1x PCIe 3.0 x8 (electrical x8), 2x M.2 / B-M key (PCIe 3.0 x4 / SATA 6Gb / s, 2280), RAID level 0/1/5/6/10 / F1 / JBOD, CPU Intel Xeon D-1527, 4x 2.20GHz RAM 8GB DDR4 ECC (1x 8GB, 3 slots free, max 64GB), Fan 2x 40mm, 39.3dB (A), Power consumption 68.68W (operation), 34.78W (idle), Dimensions (WxHxD) 480x44x518.6mm, 1U, Weight 8.16kg, Highlights Redundant power supply (150W), iSCSI, DLNA server, FTP server, iTunes server, WebDAV, 256bit AES encryption, SSD cache / TRIM support,