Synology DiskStation 4-Bay 3.5in Diskless NAS (DS425+)

Please ensure storage drives are on the compatible drives list provided by Synology. Incompatibilities caused by unsupported drives may not be covered by warranty.SPECIFICATIONS:CPU CPU Model Intel Celeron J4125CPU Quantity 1CPU Core 4CPU Architecture 64-bitCPU Frequency 2.0 (base) / 2.7 (turbo) GHzHardware Encryption Engine MEMORY System Memory 2 GB DDR4 non-ECCTotal Memory Slots 1Maximum Memory Capacity 6 GB (2 GB + 4 GB)NotesSynology reserves the right to replace memory modules with the same or higher frequency based on supplier's product life cycle status. Rest assured that the compatibility and stability have been strictly verified with the same benchmark to ensure identical performance. Please select Synology memory modules for optimum compatibility and reliability. Synology will not provide complete product warranty or technical support if non-Synology memory modules are used for memory expansion. STORAGE Drive Bays 4M.2 Drive Slots 2 (NVMe)Drive Type (See all supported drives) 3.5" SATA HDD 2.5" SATA SSD M.2 2280 NVMe SSD Hot Swappable Drive* Notes The hot swappable drive feature is not supported by M.2 SSD slots. Compatible drives are mandatory. EXTERNAL PORTS RJ-45 1GbE LAN Port 1RJ-45 2.5GbE LAN Port 1USB 3.2 Gen 1 Port 2Notes MTU value of 1GbE LAN port has a limit of 1500.APPEARANCE Size (Height x Width x Depth) 166 mm x 199 mm x 223 mmWeight 2.18 kgOTHERS System Fan 92 mm x 92 mm x 2 pcsFan Speed Mode Full-Speed Mode Cool Mode Quiet Mode Brightness Adjustable Front LED Indicators Power Recovery Noise Level* 21.6 dB(A)Scheduled Power On / Off Wake on LAN / WAN Power Supply Unit / Adapter 90 wattsAC Input Power Voltage 100V to 240V ACPower Frequency 50/60 Hz, Single PhasePower Consumption* 28.25 watts (Access)6.10 watts (HDD Hibernation) British Thermal Unit 96.33 BTU/hr (Access)20.79 BTU/hr (HDD Hibernation) Notes For more information on how power consumption is measured, refer to this article. Noise testing was conducted with the Synology system fully installed with Synology SATA SSDs and in an idle state. Two G.R.A.S. type 40AE microphones were placed at a 1 m distance from the front and rear of the device. Background noise: 16.49-17.51 dB(A); Temperature: 24.25-25.75C; Humidity: 58.2-61.8%. Operating Temperature 0C to 40C (32F to 104F)Storage Temperature -20C to 60C (-5F to 140F)Operating Humidity 8% to 80% RHStorage Humidity 5% to 95% RHCertificationFCC CE BSMI VCCI RCM UKCA EAC CCC KC BIS EnvironmentRoHS Compliant Packaging ContentMain Unit X 1 Accessory Pack X 1 AC Power Adapter X 1 AC Power Cord X 1 RJ-45 LAN Cable X 2