SpecificationsProduct code: CRS328-4C-20S-4S+RMArchitecture: ARM 32bitCPU: 98DX3236CPU core count: 1CPU nominal frequency: 800 MHzDimensions: 443 x 200 x 44 mmLicense level: 5Operating System: RouterOS / SwitchOSSize of RAM: 512 MBStorage size: 16 MBStorage type: FLASHTested ambient temperature: -20 + 60 degrees CPoweringMax Power consumption: 43WNumber of AC inputs: 2AC input range: 100-240EthernetEthernet Combo ports: 4FiberSFP ports: 20SFP+ ports: 4PeripheralsSerial port: RJ45OtherPCB temperature monitor: YesVoltage Monitor: Yes