Synology DVA3219. Video input channels: 32 channels, Internal memory: 4096 MB, Internal memory type: DDR4. HDD interface: Serial ATA,Serial ATA II,Serial ATA III. Ethernet LAN data rates: 10,100,1000 Mbit/s, Supported network protocols: MB, AFP, NFS, FTP, WebDAV, CalDAV, iSCSI, Telnet, SSH, SNMP, VPN (PPTP, OpenVPN, L2TP). Product colour: Black, Certification: FCC CE BSMI EAC VCCI RCM. Processor manufacturer: Intel, Processor frequency: 2 GHz