TS-253E-8G CPU Intel Celeron J6412 4-core/4-thread processor, burst up to 2.6 GHz CPU Architecture 64-bit x86 Graphic Processors Intel UHD Graphics Floating Point Unit Encryption Engine (AES-NI) Hardware-accelerated Transcoding System Memory 8 GB on board (non-expandable) Maximum Memory 8GB Flash Memory 4GB (Dual boot OS protection) Drive Bay 2 x 3.5-inch SATA 6Gb/s The system is shipped without HDD. For the HDD compatibility list, please visit https://www.qnap.com/compatibility/ Drive Compatibility 3.5-inch SATA hard disk drives 2.5-inch SATA hard disk drives 2.5-inch SATA solid state drives Hot-swappable M.2 Slot 2 x M.2 2280 PCIe Gen 3 x2 SSD Cache Acceleration Support 2.5 Gigabit Ethernet Port (2.5G/1G/100M) 2 (2.5G/1G/100M/10M) Wake on LAN (WOL) Jumbo Frame USB 2.0 port 2 USB 3.2 Gen 2 (10Gbps) Port 2 x Type-A HDMI Output 2 x HDMI 1.4b ( up to 3840 x 2160 @ 30Hz ) Form Factor Tower LED Indicators Power/Status, LAN, USB, HDD1-2 Buttons Power, Reset, USB Auto Copy Dimensions (HxWxD) 168.5 × 102 × 225 mm Weight (Net) 1.28 kg Weight (Gross) 2.32 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 60W/65W adapter, 100-240V Power Consumption: HDD Sleep Mode 10.56 W Power Consumption: Operating Mode, Typical 18.09 W Fan 1 x 70mm, 12VDC System Warning Buzzer Kensington Security Slot Max. Number of Concurrent Connections (CIFS) - with Max. Memory 1500