QNAP TS-873-4G 8 Bay NAS

CPU

AMD R-Series RX-421ND 4-core 2.1 GHz processor (Turbo Core to 3.4 GHz)

CPU Architecture

64-bit x86

Graphic Processors

Optional via a PCIe adapter

Floating Point Unit

Encryption Engine

 (AES-NI)

Hardware-accelerated Transcoding

Optional via a PCIe adapter

System Memory

4 GB SODIMM DDR4 (2 x 2 GB)

Maximum Memory

64 GB (4 x 16 GB)

Memory Slot

4 x SODIMM 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

8 x 3.5-inch SATA 6Gb/s, 3Gb/s

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

The following are not hot-swappable: M.2 SSDs, SSD cache drives, SSDs using PCIe expansion slots.

M.2 Slot

2 x M.2 2280/2260 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

Optional via a PCIe adapter

Wake on LAN (WOL)

Jumbo Frame

PCIe Slot

2
Slot 1: PCIe Gen 3 x4
Slot 2: PCIe Gen 3 x4

USB 3.2 Gen 1 port

4

USB 3.2 Gen 2 (10Gbps) Port

Optional via a PCIe adapter

IR Sensor

 (QNAP RM-IR004)

HDMI Output

Optional via a PCIe adapter

Audio Input

- (No longer available on units manufactured on or after 2021/1/1)

Audio Output

- (The line out jack and speaker are no longer available on units manufactured on or after 2021/1/1)

Form Factor

Tower

LED Indicators

Status/Power, USB, LAN, Drive 1-8, M.2 SSD 1-2

Buttons

Power, Reset, USB Auto Copy

Dimensions (HxWxD)

188.2 × 329.3 × 279.6 mm

Weight (Net)

6.56 kg

Weight (Gross)

8.34 kg

Operating Temperature

0 - 40 °C (32°F - 104°F)

Storage Temperature

-20 - 70°C (-4°F - 158°F)

Relative Humidity

5-95% RH non-condensing, wet bulb: 27˚C (80.6˚F)

Power Supply Unit

250W, 100-240V AC, 50-60Hz, 3.5A

Power Consumption: HDD Sleep Mode

36.43 W

Power Consumption: Operating Mode, Typical

70.26 W

Tested fully populated with 2TB hard drives.

Fan

System fan: 2 x 120mm
CPU fan: 1 x 60mm

System Warning

Buzzer

Kensington Security Slot

Max. Number of Concurrent Connections (CIFS) - with Max. Memory

1200