4-Bay NAS, AMD RX-421ND 2.1~3.4 GHz, 4GB DDR4 RAM (max 64GB), 8x 2.5"/3.5" + 2x M.2 2280/2260 SATA 6Gb/s slots, 4x GbE LAN, optional 10GbE PCIe expansion, Surveillance Station free 4 & max 72 channels
CPU | AMD R-Series RX-421ND quad-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 SO-DIMM DDR4 (2 x 2 GB) |
Maximum Memory | 64 GB (4 x 16 GB) |
Memory Slot | 4 x SO-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 | 4 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 SSD Slot | 2 x M.2 2280/2260 SATA 6Gb/s slots
The M.2 SSD is not included as standard. |
SSD Cache Acceleration Support | |
Gigabit Ethernet Port (RJ45) | 4
Expandable with an optional PCIe adapter |
10 Gigabit/ 5 Gigabit Ethernet Port | Optional via a PCIe adapter |
Jumbo Frame | |
PCIe Slot | 2 Slot 1: PCIe Gen 3 x4 Slot 2: PCIe Gen 3 x4 |
USB 3.0 port | 4 |
USB 3.1 Gen 2 (10Gbps) Port | Optional via a PCIe adapter |
IR Sensor | (QNAP RM-IR004) |
HDMI Output | Optional via a PCIe adapter |
Audio Input | 2 x 3.5 mm dynamic microphone jacks |
Audio Output | 1 x built-in speaker, 1 x 3.5mm line out jack (for ampfliers or speakers)
You cannot use the speakers and the line-out jack simultaneously. |
Form Factor | Tower |
LED Indicators | Status/Power, USB, LAN, Drive 1-4, M.2 SSD 1-2 |
Buttons | Power, Reset, USB Auto Copy |
Dimensions (HxWxD) | 188.2
![]() TS-233 ![]() AC Adapter ![]() Power Cord |