Specifications Mfr Part Number: DS218+ Hardware: CPU: Intel Celeron J3355 (2.0 GHz, burst up to 2.5GHz, Dual Core), w/ Hardware Encryption Engine (AES-NI) Memory: 2GB DDR3L Drive Bay: 2x 3.5" or 2.5" SATA SSD / HDD Maximum Internal Raw Capacity: 20 TB (10 TB drive x 2) (Capacity may vary by RAID types) External Ports: 1x RJ45 1GbE LAN Port, 3x USB 3.0 Ports, 1x eSATA Port Fan: 1x (92 x 92mm) Fan Noise Level: 19.3 dB(A) Power Recovery Scheduled Power On/Off Wake on LAN/WAN Power Supply Unit / Adapter: 60W AC Input Power Voltage: 100V to 240V AC Power Frequency: 50/60 Hz, Single Phase Networking Protocols: CIFS, AFP, NFS, FTP, WebDAV, CalDAV, iSCSI, Telnet, SSH, SNMP, VPN (PPTP, OpenVPN) Security: FTP over SSL/TLS, IP Auto-Block, Firewall, Encrypted Network Backup over Rsync, HTTPS Connection File System: Internal: Btrfs, EXT4 External Drives: Btrfs, EXT4, EXT3, FAT, NTFS, HFS+, exFAT File Sharing: Maximum Local User Accounts: 2048 Maximum Local Groups: 256 Maximum Shared Folder: 256 Maximum Shared Folder Sync Tasks: 4 Maximum Concurrent CIFS/AFP/FTP Connections: 500 Windows Access Control List (ACL) Integration NFS Kerberos Authentication Utilities: Synology Assistant Applications: File Station: Virtual drive, remote folder, Windows ACL editor, compressing/extracting archived files, bandwidth control for specific users or groups, creating sharing links, transfer logs FTP Server: Bandwidth control for TCP connections, custom FTP passive port range, anonymous FTP, FTP SSL/TLS and SFTP protocol, boot over the network with TFTP and PXE support, transfer logs Web Station: Virtual host (up to 30 websites), PHP / MariaDB, third-party applications support iOS/Android Applications: DS audio, DS cam, DS cloud, DS file, DS finder, DS get, DS note, DS photo, DS video, MailPlus Windows Phone Applications: DS audio, DS file, DS finder, DS get, DS photo, DS video