TS-431XeU-8G CPU AnnapurnaLabs Alpine AL314 32-bit ARM® Cortex-A15 quad-core 1.7GHz processor CPU Architecture 32-bit ARM Floating Point Unit Encryption Engine System Memory 8 GB SODIMM DDR3 (1 x 8 GB) Maximum Memory 8 GB (1 x 8 GB) Memory Slot 1 x SO-DIMM DDR3 Flash Memory 512MB (Dual boot OS protection) Drive Bay 4 x 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 SSD Cache Acceleration Support Gigabit Ethernet Port (RJ45) 2 10 Gigabit Ethernet Port 1 x 10GbE SFP+ Wake on LAN (WOL) Jumbo Frame USB 3.2 Gen 1 port 4 Form Factor 1U Rackmount LED Indicators HDD 1-4, Status, USB, LAN1-3 Buttons Power, Reset Dimensions (HxWxD) 44 × 439 × 291 mm Weight (Net) 4.15 kg Weight (Gross) 5.78 kg Operating temperature 0 - 40 °C (32°F - 104°F) Storage Temperature -20 - 70°C (-4°F - 158°F) Relative Humidity 5-95% RH non-condensing, wet bulb: 27°C (80.6°F) Power Supply Unit Open-frame 100W, Input: 100V-240V ~ / 3.5A, 50Hz-60Hz Power Consumption: HDD Sleep Mode 12.42 W Power Consumption: Operating Mode, Typical 30.99 W Tested with drives fully populated. Fan 3 x 40mm, 12VDC System Warning Buzzer Kensington Security Slot Max. Number of Concurrent Connections (CIFS) - with Max. Memory 400