| Ordering P/N | TS-451A-4G | TS-451A-2G |
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| Processor | 14nm Intel® Celeron® N3060 dual-core 1.6GHz (up to 2.48GHz) |
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Hardware Encryption Accleration | ✓,AES-NI |
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| System Memory | 4GB DDR3L (2 x 2GB) | 2GB DDR3L (2 x 1GB) |
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| Maximum Memory | 8GB |
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| Memory Slot | 2 x SODIMM DDR3L (For dual-DIMM configurations, you must use a pair of identical DDR3L modules.) |
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| Flash Memory | 4GB, pre-loaded with QTS system |
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| Drive Type | 4 x 3.5"/2.5" SATA 6Gb/s HDDs/SSDs |
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| GbE LAN | 2 x Gigabit RJ45 LAN port |
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| USB Port | 3 x USB 3.0 ports (Front: 1, Rear:2) |
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| SD Card Reader | ✓ |
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| USB QuickAccess | ✓ (USB 3.0 Micro-B); USB cable is not included |
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| HDMI | 1, max. resolution 3840 x 2160 @ 30Hz |
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| Audio Input | 3.5mm Microphone Input jack (for dynamic microphone) |
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| Audio Output | 3.5mm Line Out jack (for ampliers or speakers) |
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| LED Indicator | Status/Power,USB,HDD 1,HDD 2,HDD 3,HDD 4 |
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| Button | Power/Status, USB one-touch-backup, reset |
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| IR Receiver | ✓, supports QNAP RM-IR002 and MCE-compliant remote controls |
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| Others | Kensington security slot,system maintenance port |
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| Dimension | 168.5 x 160 x 225 mm 6.63 x 6.30 x 8.86 inch (HxWxD) |
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| Weight | Net: 3 kg (6.61 lbs) Gross: 3.6 kg (7.94 lbs) |
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| Operating Temperature | 0-40˚C |
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| Relative Humidity | 5~95% RH non-condensing, wet bulb: 27˚C |
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| Noise Level | 18.1 dB (A) Refer to ISO 7779 ; Maximum HDD loaded ; Bystander Position ; Average data from 1 meter in front of operating NAS |
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| Power Consumption | System sleep: 0.65W HDD standby:12.1W In operation:27W (with 4 x 2TB HDDs) |
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| Power | 96W AC power adapter, 100-240V AC |
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| Fan | 1 x 12cm system fan (12V DC) |
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