CPU
Intel® Celeron® 2.0GHz quad-core processor 



Hard Disk Drive8 x 3.5” (WD RED NAS HDD 3TB Installed)
Hard Disk Tray8 x Hot-swappable tray
LAN Port4 x Gigabit RJ-45 Ethernet port
LED IndicatorsStatus, LAN, USB, HDD 1-8
USB3 x USB 3.0 port (Front: 1, Rear: 2)
2 x USB 2.0 port (Rear: 2)
Support USB printer, pen drive, and USB UPS etc.
HDMI1
ButtonsPower/Status, USB One-Touch-Backup, reset
Alarm BuzzerSystem warning
IR ReceiverMCE-compatible
Form FactorTower
Dimensions185.2(H) x 298.2(W) x 235(D) mm
7.29(H) x 11.74(W) x 9.25(D) inch
WeightNet: 7.3 kg (16.08 lbs)
Gross: 8.6 kg (18.94 lbs)
Power Consumption (W)HDD standby: 28.62W
S3 sleep: 1.08W
In operation: 59.54W
Sound Level*Sound pressure (LpAm) :23.4 dB(A)
Temperature0-40˚C
Humidity5~95% RH non-condensing, wet bulb: 27˚C
Power SupplyATX 350W, 100-240V
Secure DesignKensington security slot for theft prevention
Fan2 x quiet cooling fan ( 12cm, 12V DC)

NOTE:

QNAP is Used but in very good condition 
There are 3 TB x 8 Western Digital RED NAS disks Total Capacity 24TB.
All disks are in Good health and working fine.  
No Box 

The TS-853 Pro, featuring the easy-to-use QTS operating system, is a powerful, reliable, secure and scalable NAS solution designed for mission-critical business applications and to meet fast growing data storage needs. The TS-853 Pro supports SATA 6Gb/s drives and delivers high performance with persistent throughput, providing a comprehensive storage solution for SMBs to build a reliable private cloud.

  • Use the TS-853 Pro as a PC with exclusive QvPC Technology
  • Manage, share, and back up business data with Real-time Remote Replication (RTRR)
  • NAS and iSCSI-SAN unified storage solution for server virtualization
  • Supports VMware®, Citrix®, and Microsoft® Hyper-V and advanced virtualization features
  • Enhanced data security with high-performance AES 256-bit encryption and anti-virus
  • Run multiple Windows/Linux-based virtual machines with the Virtualization Station
  • Transcode Full HD videos on-the-fly or offline with QNAP’s unique transcoding technology*
  • Expand the total raw storage capacity up to 96TB with the economical UX-800P QNAP expansion enclosure

https://www.qnap.com/en/product/ts-853%20pro