| Processor | |
| Motherboard chipset | AMD B650 |
| Processor manufacturer | AMD |
| Processor socket | AM5 |
| Built-in processor | ![]() |
| Number of processors supported | 1 |
| Memory | |
| Maximum internal memory | 192 GB |
| ECC | ![]() |
| Number of DIMM slots | 4 |
| Non-ECC | ![]() |
| Memory voltage | 1.1 V |
| Supported memory types | DDR5 |
| Unbuffered memory | ![]() |
| Number of memory slots | 4 |
| Supported memory clock speed (max) | 5600 MHz |
| Ports & interfaces | |
| Serial ports quantity | 1 |
| USB 2.0 ports quantity | 0 |
| Ethernet LAN (RJ-45) ports | 4 |
| VGA (D-Sub) ports quantity | 1 |
| HDMI ports quantity | 1 |
| DisplayPorts quantity | 1 |
| IPMI LAN (RJ-45) port | ![]() |
| USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity | 6 |
| Weight & dimensions | |
| Height | 44.4 mm |
| Width | 533.4 mm |
| Depth | 438 mm |
| Energy management | |
| Power supply | 400 W |
| 80 PLUS certification | 80 PLUS Gold |
| Operational conditions | |
| Operating relative humidity (H-H) | 20 - 90% |
| Storage temperature (T-T) | -40 - 70 °C |
| Operating temperature (T-T) | 10 - 35 °C |
| Networking | |
| Ethernet LAN | ![]() |
| Bluetooth | ![]() |
| LAN controller | Intel I210 |
| Wi-Fi | ![]() |
| Ethernet interface type | 10 Gigabit Ethernet |
| Storage | |
| Hot-swap HDD bays | ![]() |
| Number of 3.5" bays | 4 |
| Number of storage drives supported | 4 |
| Storage drive sizes supported | 3.5" |
| Internal I/O | |
| CPU fan connector | ![]() |
| ATX Power connector (24-pin) | ![]() |
| Front panel audio connector | ![]() |
| TPM connector | ![]() |
| EPS power connector (8-pin) | ![]() |
| Number of SATA III connectors | 4 |
| Front panel connector | ![]() |
| Back panel I/O ports | |
| Ethernet LAN (RJ-45) ports | 4 |
| HDMI ports quantity | 1 |
| DisplayPorts quantity | 1 |
| USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity | 6 |
| Storage controllers | |
| RAID support | ![]() |
| Expansion slots | |
| PCI Express x16 slots | 1 |
| Number of M.2 (M) slots | 1 |
| PCI Express x16 (Gen 4.x) slots | 1 |
| BIOS | |
| Plug and Play | ![]() |
| BIOS type | EFI AMI |
| ACPI version | 6.4 |
| Clear CMOS button | ![]() |
| System Management BIOS (SMBIOS) version | 3.5 |
| Design | |
| Chassis type | Rack (1U) |
| LED indicators | ![]() |
| Reset button | ![]() |
| Number of fans | 5 fan(s) |
| On/off switch | ![]() |
| Graphics | |
| On-board graphics card model | Aspeed AST2600 |
| Features | |
| PC health monitoring | Fan, Temperature, Voltage |
| Component for | Server |
| Product type | Server / Workstation Motherboard |
| EAN | 4711430520018 |
The ASRock Rack 1U4LW-B650/2L2T is a 1U rackmount server barebones system designed for compact, high-density environments. It is built on the AMD B650 chipset and features an AM5 socket, providing compatibility with AMD EPYC 4004/4005 and Ryzen 7000, 8000, and 9000 series processors. The system includes four DIMM slots that support up to 192 GB of dual-channel DDR5 memory, with options for both ECC and non-ECC UDIMMs. This configuration provides a scalable foundation for various enterprise and edge computing workloads.
For storage and connectivity, the chassis incorporates four hot-swappable 3.5-inch SATA drive bays and a single M.2 slot for high-speed solid-state drives. The rear I/O provides extensive networking capabilities with four Ethernet ports, including two with 10GbE speeds for data-intensive tasks. Remote server administration is handled through a dedicated IPMI interface, allowing for out-of-band management and monitoring. The integrated cooling system utilizes five hot-swap PWM fans to maintain operating temperatures within the compact 1U enclosure.
Key Features:- Supports AMD AM5 socket for EPYC and Ryzen processors
- Utilizes the AMD B650 chipset
- Features four DDR5 DIMM slots for up to 192 GB of ECC/non-ECC memory
- Includes four 3.5-inch hot-swap SATA drive bays
- Provides one M.2 slot for PCIe storage
- Equipped with two 10GbE and two 1GbE LAN ports
- Offers one PCIe 4.0 x16 expansion slot
- Features integrated IPMI for remote management
- Built in a compact 1U rackmount form factor
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- manual pdf (English)


