TS-664-8G CPU Intel® Celeron® N5095 4-core/4-thread processor, burst up to 2.9 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 SODIMM DDR4 (1 x 8 GB) Since 2024/01 Maximum Memory 16 GB (2 x 8GB) Memory Slot 2 x SODIMM DDR4 Flash Memory 4GB (Dual boot OS protection) Drive Bay 6 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 solid state drives Hot-swappable (Not supported M.2 SSD) M.2 Slot 2 x M.2 2280 PCIe Gen 3 x1 If a heatsink is to be installed, it is recommended that the top heatsink dimensions be less than 68 x 20 x 10 mm (L x W x H) SSD Cache Acceleration Support 2.5 Gigabit Ethernet Port (2.5G/1G/100M) 2 (2.5G/1G/100M/10M) 5 Gigabit Ethernet Port (5G/2.5G/1G/100M) Optional via PCIe expansion card 10 Gigabit Ethernet Port Optional via PCIe expansion card Wake on LAN (WOL) Jumbo Frame PCIe Slot 1 Slot 1: PCIe Gen 3 x2 Card dimensions for PCIe slot:190 x 68.9x 18.76 mm / 7.48 x 2.71 x 0.74 inches. USB 2.0 port 2 USB 3.2 Gen 2 (10Gbps) Port 2 x Type-A IR Sensor (Optional QNAP RM-IR004 remote control) HDMI™ Output 1, HDMI™ 2.1 (up to 4096 x 2160 @ 60Hz) Form Factor Tower LED Indicators Power/Status, LAN, USB, HDD1-6 Buttons Power, USB copy, Reset Dimensions (HxWxD) 165 × 235 × 226.5 mm Dimensions do not include foot pad (foot pad may be up to 30mm / 1.18 inches high depending on model) Weight (Net) 2.94 kg Weight (Gross) 5.1 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 120W adapter, 100-240V Power Consumption: Disk Standby Mode 23.22 W Power Consumption: Operating Mode, Typical 44.02 W Tested with drives fully populated. Fan 2 x 90mm, 12VDC System Warning Buzzer Kensington Security Slot Standard Warranty 3 Max. Number of Concurrent Connections (CIFS) - with Max. Memory 1,500