Synology Disk Station 4-Bay Diskless Network Attached Storage (DS416j) Dual-core CPU with hardware encryption engine. Compatible Drive Type: 3.5" SATA III / SATA II HDD, 2.5" SATA III / SATA II HDD (with optional 2.5" Disk Holder), 2.5" SATA III / SATA II SSD (with optional 2.5" Disk Holder) Powerful entry-level 4-Bay NAS for home and personal use Brightness adjustable front LED indicators DLNA-certified media server Running on Synology Disk Station Manager (DSM) Over 112.82 MB/s reading, 101.2 MB/s writing