Qnap TS-420 NAS with 12TB installed

CPU Marvell 1.6GHz
DRAM 512MB DDR3 RAM
Flash Memory 16MB
HDD 4 x 3.5" or 2.5” SATA HDD/ SSD
NOTE:
1. Maximum raw capacity: 16TB
2. The system is shipped without HDD.
HDD Tray 4 x swappable tray
LAN Port 2 x Gigabit RJ-45 Ethernet port
LED Indicators STATUS, LAN, USB, eSATA, HDD 1, HDD 2, HDD 3, HDD 4
USB
2 x USB 2.0 port (Front x1; Back x1);
2 x USB 3.2 Gen 1 port (Back)
Supports USB printer, disk, pen drive, USB hub, and USB UPS, etc.
eSATA 2 x eSATA port (Back)
Buttons Power button, USB one-touch-backup button, reset button
Alarm Buzzer System warning
Form Factor Tower
Dimensions
177(H) x 180(W) x 235(D) mm
6.97(H) x 7.09(W) x 9.25(D) inch
Weight
Net weight: 3 Kg (6.61 lbs)
Gross weight: 4.6 Kg (10.14 lbs)
Power Consumption (W)
Sleep mode: 13W
In operation: 31W
(with 4 x 500GB HDD installed)
Temperature 0~40˚C/ 32~104°F
Humidity 5~95% RH non-condensing, wet bulb: 27˚C.
Power Supply External power adaptor,90W, Input: 100-240V
Secure Design K-lock security slot for theft prevention
Fan 1 x quiet cooling fan (9 cm, 12V DC)

4 No 3TB hard drives installed