| CPU | AMD R-Series RX-421ND quad-core 2.1 GHz processor (Turbo Core to 3.4 GHz) |
| CPU Architecture | 64-bit x86 |
| Floating Point Unit | |
| Encryption Engine | (AES-NI) |
| System Memory | 8 GB UDIMM DDR4 (2 x 4 GB) |
| Maximum Memory | 64 GB (4 x 16 GB) |
| Memory Slot | 4 x U-DIMM DDR4
For dual- or quad-DIMM configurations, you must use a pair of identical DDR4 modules.
|
| Flash Memory | 512 MB (Dual boot OS protection) |
| Drive Bay | 16 x 3.5-inch SATA 6Gb/s, 3Gb/s
The system is shipped without HDD.
For the HDD compatibility list, please visit https://www.qnap.com/compatibility/ |
| Drive Compatibility | 3.5-inch SATA hard disk drives 2.5-inch SATA hard disk drives 2.5-inch SATA solid state drives |
| Hot-swappable | |
| M.2 SSD Slot | 2 x M.2 2280 SATA 6Gb/s slots
The M.2 SSD is not included as standard.
M.2 SSD operations can easily generate excessive heat. It is recommended to install a heatsink (from QNAP or a third-party provider) on the M.2 SSD. |
| SSD Cache Acceleration Support | |
| Gigabit Ethernet Port (RJ45) | 4
Expandable with an optional PCIe adapter
|
| 10 Gigabit Ethernet Port | 2 x 10GbE SFP+
Pre-installed with a 10GbE PCIe adapter
|
| Jumbo Frame | |
| PCIe Slot | 1 Slot 1: PCIe Gen 3 x4 Pre-installed with a 10GbE PCIe adapter
|
| USB 2.0 port | 4 |
| USB 3.0 port | 2 |
| USB 3.1 Gen 2 (10Gbps) Port | Optional via a PCIe adapter |
| Form Factor | 3U Rackmount |
| LED Indicators | HDD 1-16, Status, LAN, USB, Power |
| Buttons | Power, Reset |
| Dimensions (HxWxD) | 130 × 481 × 536 mm |
| Weight (Net) | 15.01 kg |
| Operating temperature | 0 - 40 °C (32°F - 104°F) |
| Relative Humidity | 5-95% RH non-condensing, wet bulb: 27?C (80.6?F) |
| Power Supply Unit | 500W (x2), 100-240V AC, 50-60Hz, 7-3.5A |
| Power Consumption: HDD Sleep Mode | 70.93 W |
| Power Consumption: Operating Mode, Typical | 127.26 W
With WD10EFRX drives fully populated
|
| Fan | 4 x 92mm, 12VDC |
| Sound Level | 40.3 db(A) |
| Other Interfaces | 1 x 3.5mm console port |
| System Warning | Buzzer |
