NAS QNAP TS-251B: 2-Bay NAS, Intel Celeron Apollo Lake J3355 dual-core 2.0GHz (up to 2.5GHz), 4GB DDR3L SODIMM RAM (1x4GB, 2 DIMM slots, max 8GB total)

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Thiết bị lưu trữ NAS QNAP TS-251B-4G
Hardware Specs
CPUIntel® Celeron® J3355 dual-core 2.0 GHz processor (burst up to 2.5 GHz)
CPU Architecture64-bit x86
Graphic ProcessorsIntel® HD Graphics 500
Encryption EngineYES (AES-NI)
Hardware-accelerated TranscodingYES
System Memory4 GB SO-DIMM DDR3L (1 x 4 GB)
Maximum Memory8 GB (2 x 4GB)
Memory Slot2 x SO-DIMM DDR3L
Flash Memory4GB (Dual boot OS protection)
Drive Bay2 x 3.5-inch SATA 6Gb/s, 3Gb/s
Drive Compatibility3.5-inch SATA hard disk drives
2.5-inch SATA hard disk drives
2.5-inch SATA solid state drives
M.2 SSD SlotOptional via a PCIe adapter
SSD Cache Acceleration SupportYES
Gigabit Ethernet Port (RJ45)1
PCIe Slot1: PCIe Gen 2 x2
USB 2.0 port3
USB 3.0 port2
USB 3.1 portOptional via a PCIe expansion card
IR SensorQNAP RM-IR004
HDMI Output1, HDMI 1.4b (up to 3840 x 2160 @ 30Hz)
Audio Input2 x 3.5mm dynamic microphone input jacks
Audio Output1 x built-in speaker

1 x 3.5mm line out jack (for amplifier or headphone amplifier)

Form FactorTower
Dimensions (HxWxD)168 × 105 × 226 mm
Weight1.53 kg ~ 2.63 kg
Power Supply UnitExternal Power Adapter, 65W, 100-240V
Software Specs
Storage Management
  • 0, 1, JBOD, Single
  • RAID hot spare and global hot spare
  • RAID rebuild speed customization