ASRock Rack
ASRock Rack 1U4LW-B650/2L2T RPSU barebone server
1U rackmount barebone with four hot-swap 3.5" SATA bays, dual 10GbE and dual 1GbE LAN, 450W redundant power, and AM5 socket supporting Ryzen 7000 series up to 170W TDP
- Form Factor1U Rackmount
- WorkloadGeneral Purpose Server
- CPU TypeSupports AMD Ryzen 7000 series Processors
- CPU SocketAM5
- Max Processors1
- CPU FeaturesThermal Design Power: Up to 170W *Based on Cinebench R23 too
- 1U rackmount with 450W redundant power supply for high availability
- Single AM5 socket supports AMD Ryzen 7000 and EPYC 4005 series processors up to 170W TDP
- Four DDR5 DIMM slots with ECC support and up to 198GB maximum memory capacity
- Four hot-swap 3.5-inch SATA drive bays provide flexible local storage
- Dual 10GbE and dual 1GbE LAN ports deliver high-speed network connectivity
1U rackmount barebone for AMD AM5 CPUs
The ASRock Rack 1U4LW-B650/2L2T RPSU is a 1U server barebone built around the AMD B650 chipset and a single AM5 socket. It supports AMD Ryzen 7000 series and EPYC 4004/4005 processors with a thermal design power up to 170W. Four hot-swap 3.5-inch SATA drive bays and a redundant 450W power supply suit general-purpose workloads in a standard rack.
Quad-channel DDR5 with ECC up to 198 GB
Four 288-pin UDIMM slots accept DDR5 ECC or non-ECC memory running at 5200 MHz with one DIMM per channel or 3600 MHz with two per channel. Maximum capacity reaches 198 GB using 48 GB modules. No memory is installed, so builders must populate the slots with validated DDR5 modules from the qualified vendor list.
Redundant 450W power supply in 1U
The 1+1 redundant 450W power supply unit delivers continued operation if one module fails. Dual 10GbE ports via Broadcom BCM57416 and dual 1GbE ports via Intel i210 handle network traffic. A full-height PCIe 4.0 x16 slot and one M.2 slot with PCIe 5.0 x4 connectivity provide expansion for storage or accelerator cards.
Highlights
- 1U rackmount with 450W redundant power supply for high availability
- Single AM5 socket supports AMD Ryzen 7000 and EPYC 4005 series processors up to 170W TDP
- Four DDR5 DIMM slots with ECC support and up to 198GB maximum memory capacity
- Four hot-swap 3.5-inch SATA drive bays provide flexible local storage
- Dual 10GbE and dual 1GbE LAN ports deliver high-speed network connectivity
Specifications
| Brand | ASRock Rack |
|---|---|
| Model | 1U4LW-B650/2L2T |
| Form Factor | 1U Rackmount |
| Workload | General Purpose Server |
| CPU Type | Supports AMD Ryzen 7000 series Processors |
| CPU Socket | AM5 |
| Max Processors | 1 |
| CPU Features | Thermal Design Power: Up to 170W *Based on Cinebench R23 tool to meet AMD criteria |
| North Bridge | AMD B650 |
| Memory Slots | 4 x DIMM slots (2DPC) DDR5 288-pin ECC/non-ECC UDIMM |
| Installed Memory Size | No Memory Installed |
| Max Memory Supported | 198GB, Max. Capacity per DIMM (48GB) |
| Memory Type Supported | 5200 MHz (1DPC); 3600 MHz (2DPC) |
| Channel Supported | Quad Channel |
| ECC Supported | Yes |
| Installed HDD | No Storage Installed |
| M.2 | 1 M-key (PCIe5.0 x4), supports 2280/2242 form factor [CPU] |
| PCI | 1 x FH PCIe4.0 x16 via RB1UX16_G4 |
| First LAN | Broadcom BCM57416: 2 RJ45 (10GbE) |
| Second LAN | Intel i210: 2 RJ45 (1GbE) |
| Max. LAN Speed | 10 Gigabit |
| Hot-Swap Bays | 4 Hot-swap 3.5" SATA drive bays |
| Front USB | 2 Type-A (USB3.2 Gen1) |
| VGA | 1 |
| Rear USB | 4 Type-A (USB3.2 Gen1) |
| RJ45 | 2 x RJ45 (10GbE) 2 x RJ45 (1GbE) 1 x dedicated IPMI |
| Other Ports | 1 x HDMI 1 x DisplayPort 1 x DB9 (COM) |
| Max. Power | 450W 1+1 Redundant PSU, 100-240V, 50-60Hz |
| System Compatibility | Microsoft Windows: - Windows 10 (64 bit) - Windows 11 (64 bit) Linux: - RedHat Enterprise Linux Server 8.7 (64bit) - CentOs 8.5 ( 64 bit) - SUSE SLES 15.4(64 bit) / 15.2(64 bit) - UBuntu 22.04.1 (64 bit) / 21.10 (64 bit) / 21.04 (64 bit) Hypervisor: - VMWare ESXi 8.0 / 7.0 U3g |
| BIOS Features | BIOS Type: AMI UEFI BIOS; 256Mb (32MB) SPI Flash ROM BIOS Features: Plug and Play, ACPI 6.4 compliance wake up events, SMBIOS 3.5 |
| Fans | 5 x PWM Hot-swap 40x28 mm fans |
| Hardware Monitor | Temperature Monitor: CPU, DDR, MB, Card Side, Chipset, 10G LAN, M.2 slot Fan Monitor: Fan Tachometer, Multi-Speed Control, CPU Quiet Fan (Allow Chassis Fan Speed Auto-Adjust by CPU Temperature) Voltage Monitor: VOLT_3VSB, VOLT_5VSB, VOLT_P0_VCORE, VOLT_P0_VSOC, VOLT _VMEM, VOLT _VMISC, VOLT_1.8V_PT21, VOLT_VSUS10, VOLT_VDD10, VOLT_V10_PHY_DIG, VOLT_VDD_1P8, VOLT_MD_VDDO, VOLT_BAT, VOLT_3V, VOLT_5V, VOLT_12V |
| Temperature | Operation temperature: 10°C ~ 35°C / Non operation temperature: -40°C ~ 70°C |
| Humidity | Non operation humidity: 20% ~ 90% ( Non condensing) |
| Shipping weight | 17.51 kg |
| Package size | 625 × 565 × 205 mm |
Questions about this item
How does the 170 W CPU power limit affect which AMD Ryzen 7000 series processors I can run in this 1U barebone?
The board supports Ryzen 7000 series CPUs up to a 170 W TDP, so models such as the 7950X, 7950X3D, 7900X and 7900X3D are within spec, while higher-wattage parts would exceed the thermal design.
What practical throughput can I expect from the dual 10 GbE ports provided by the Broadcom BCM57416 controller?
The BCM57416 delivers two RJ45 ports at 10 GbE line rate, giving up to 10 Gbit/s per port for storage replication, backup or high-speed LAN traffic.
Will a full-height PCIe 4.0 x16 add-in card fit in the 1U chassis without a riser?
The system includes the RB1UX16_G4 riser, which provides one full-height PCIe 4.0 x16 slot, so a standard FH card installs directly in the 1U enclosure.
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