QNAP TS-253E 2-Bay Tower NAS Enclosure 8GB RAM Dual M.2 NVMe 2.5GbE ServerCPU 2 to 2.6 GHz Quad-CoreProcessor Intel Celeron J6412GPU Intel UHD GraphicsTotal Installed Memory 8 GBFlash Memory 4 GBGeneralNumber of Bays 2 x 2.5"/3.5"2 x M.2 (2280)Inputs/Outputs 2 x RJ45 (2.5GbE)2 x USB Type-A (USB 2.0 (480 Mb/s))2 x USB Type-A (USB 3.1 / USB 3.2 Gen 2 (10 Gb/s))2 x HDMI Type-A (HDMI 1.4b)Compatible Drive Interface SATA III, NVMeMedia Card Slots NoneForm Factor DesktopRAID RAID 0, 1, JBOD, SingleHot-Swap Support YesWake on LAN YesNetworkingSupported Protocols v2SNMP v3SSHSSLTFTPTelnetWebDAViSCSIiSCSI Target 256Max Concurrent Connections 1500Max Folders 512Max Sync Tasks 400Max Groups 512Max User Accounts 4096Max Cameras Supported 10,000SoftwareInstalled Operating System QTS 5.0.1Supported File Systems Internal: EXT4External: EXT3, EXT4, FAT32, NTFS, exFATOS Compatibility macOS 10.10 or LaterWindows 7 or LaterWindows Server 2008 R2 or LaterUbuntu 14.4 or LaterCentOS 7 or LaterLinuxUNIX*As of September, 2022: Check with manufacturer for the most up-to-date compatibilitySupported Browsers Chrome, Edge, Firefox, SafariSecurityEncryption 256-Bit AESSecurity Features Lockable Bay DoorVPN Client Connections 100ElectricalAC Input Power 100 to 240 VAC, 50 / 60 HzPower Source AC AdapterPower Consumption 18.09 W (Typical)10.56 W (Idle)EnvironmentalOperating Temperature 32 to 72°F / 0 to 40°COperating Humidity 5 to 95%Storage Temperature -4 to 158°F / -20 to 70°CPhysicalColor BlackStatus Monitoring LED IndicatorAudible Alarm YesCooling 1 x 70 mm FanBuilt-In Speakers NoneDimensions 8.86 x 6.63 x 4.02" / 225.04 x 168.4 x 102.11 mmWeight 2.8 lb / 1.3 kg without Drives