QNAP TS-433. Supported storage drive types: HDD & SSD, Supported storage drive interfaces: Serial ATA, Storage drive sizes supported: 2.5,3.5". Processor family: ARM, Processor model: Cortex-A55, Processor frequency: 2 GHz. Internal memory: 4 GB, Maximum RAM supported: 4 GB, Flash memory: 4000 MB. Ethernet LAN data rates: 100,1000,2500 Mbit/s. Chassis type: Tower, Cooling type: Active, Number of fans: 1 fan(s)