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QNAP TS-251 User Manual

QNAP TS-251
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118
5. Turn on the NAS.
Note: To replace a failed power supply unit, turn off the NAS. Then remove the failed unit
safely and repeat steps 3-5 above to install a new power supply unit.
11.2 2U/3U Turbo NAS (TS-831XU-RP, TS-1231XU-RP, TS-853U-RP,
TS-1253U-RP only)
Note: The following instructions should only be performed by an authorized and trained
technician.
To replace a failed power supply unit, follow the steps below.
1. Turn off the NAS.
2. Hold the black handler and press and hold the green button firmly.
3. Unplug the failed power supply.

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QNAP TS-251 Specifications

General IconGeneral
Flash Memory512MB
Drive Bays2
Hot Swappable DriveYes
Power Supply65W adapter, 100-240V
Form FactorTower
Memory1GB DDR3L RAM (expandable up to 8GB)
Network2 x Gigabit RJ-45 Ethernet port
USB Ports2 x USB 3.0, 2 x USB 2.0
HDMI Output1
Weight1.28 kg
Operating SystemQTS
Dimensions168 x 102 x 225 mm (6.61 x 4.02 x 8.86 inches)

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