Qnap TS-431K-US NAS TS-431K-US 4Bay Personal Cloud NAS 4core 1.7GHz 1GB Retail

CPU
AnnapurnaLabs, an Amazon company Alpine AL214, 4-core, 1.7GHz CPU Architecture
32-bit ARM Floating Point Unit
Yes Encryption Engine
Yes System Memory
1GB DDR3 Maximum Memory
1GB DDR3 Flash Memory
512 MB (Dual boot OS protection) Drive Bay
4x 3.5-inch SATA 6Gb/s, 3Gb/s Drive Compatibility
3.5-inch bays:
3.5-inch SATA hard disk drives
2.5-inch SATA hard disk drives
2.5-inch SATA solid state drives Hot-swappable
Yes SSD Cache Acceleration Support
Yes Gigabit Ethernet Port (RJ45)
2 Jumbo Frame
Yes USB 3.2 Gen 1 port
3 Form Factor
Tower LED Indicators
Power, Status, LAN, USB, HDD1-4 Buttons
Power, Reset, USB Auto Copy Operating temperature
0 - 40 ^oC (32^oF - 104^oF) Relative Humidity
5-95% RH non-condensing, wet bulb: 27^oC (80.6^oF) Power Supply Unit
90W Adapter, 100-240V