| Processor | |
| Motherboard chipset | AMD B650 |
| Processor manufacturer | AMD |
| Compatible processor series | AMD EPYC 4004, AMD Ryzen 3 8th Gen, AMD Ryzen 5 8th Gen, AMD Ryzen 7 8th Gen, AMD Ryzen 9 8th Gen, AMD Ryzen 9 9th Gen |
| Processor socket | AM5 |
| 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 |
| Memory form factor | 288-pin DIMM |
| Supported RDIMM clock speeds | 3600 MHz |
| Unbuffered memory | ![]() |
| Number of memory slots | 4 |
| Supported memory clock speed (max) | 5600 MHz |
| Ports & interfaces | |
| Ethernet LAN (RJ-45) ports | 2 |
| VGA (D-Sub) ports quantity | 1 |
| COM 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 | 43.4 mm |
| Width | 676.5 mm |
| Depth | 438 mm |
| Energy management | |
| Power supply | 650 W |
| 80 PLUS certification | 80 PLUS Platinum |
| AC input frequency | 50/60 Hz |
| AC input voltage | 100 - 240 V |
| Number of main power supplies | 2 |
| Operational conditions | |
| Storage temperature (T-T) | -40 - 70 °C |
| Operating temperature (T-T) | 10 - 35 °C |
| Storage relative humidity (H-H) | 20 - 90% |
| Networking | |
| Ethernet LAN | ![]() |
| Bluetooth | ![]() |
| LAN controller | Intel I210 |
| Wi-Fi | ![]() |
| Ethernet interface type | Gigabit Ethernet |
| Storage | |
| Hot-swap HDD bays | ![]() |
| Number of 3.5" bays | 2 |
| Supported storage drive types | HDD & SSD |
| Supported storage drive interfaces | M.2, Serial ATA III |
| Internal I/O | |
| CPU fan connector | ![]() |
| ATX Power connector (24-pin) | ![]() |
| Front panel audio connector | ![]() |
| TPM connector | ![]() |
| EPS power connector (8-pin) | ![]() |
| USB 3.2 Gen 1 (3.1 Gen 1) connectors | 2 |
| Number of SATA III connectors | 4 |
| Front panel connector | ![]() |
| Back panel I/O ports | |
| Ethernet LAN (RJ-45) ports | 2 |
| 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 | 2 |
| Number of M.2 (M) slots | 2 |
| PCI Express x16 (Gen 4.x) slots | 2 |
| BIOS | |
| Plug and Play | ![]() |
| BIOS memory size | 256 Mbit |
| BIOS type | UEFI AMI |
| ACPI version | 6.4 |
| Clear CMOS button | ![]() |
| System Management BIOS (SMBIOS) version | 3.5 |
| Design | |
| Chassis type | Rack (1U) |
| LED indicators | HDD, LAN, Power, System |
| Product colour | Grey |
| Reset button | ![]() |
| Number of fans | 6 fan(s) |
| On/off switch | ![]() |
| Cooling type | Active |
| Hot-swap fan module | ![]() |
| Graphics | |
| On-board graphics card model | Aspeed AST2600 |
| Features | |
| PC health monitoring | Voltage, Fan, Temperature |
| Component for | Server |
| Product type | Server / Workstation Motherboard |
| EAN | 4711430521602 |
The ASRock Rack 1U4L2E-B650 RPSU is a server barebone system built into a 1U rackmount chassis for deployments in dense data center or remote office environments. Its foundation is the AMD B650 chipset, which utilizes an AM5 socket to support select AMD EPYC 4000 series and Ryzen 7000, 8000, and 9000 series processors. This hardware combination is engineered to provide a stable platform for applications that require consistent operational reliability.
The system supports a maximum memory capacity of 192 GB via four dual-channel DIMM slots, which accommodate both DDR5 ECC and non-ECC unbuffered modules. For storage, it provides four SATA III ports and two M.2 slots compatible with NVMe drives, offering flexibility for various storage architectures. Network connectivity is managed by two integrated Gigabit Ethernet ports, and expansion is available through two PCIe 4.0 x16 slots. The chassis is equipped with six PWM hot-swap fans to regulate temperatures within the compact enclosure.
Key Features:- Supports AMD AM5 socket processors including select EPYC and Ryzen series
- Built on the AMD B650 chipset for server applications
- Accommodates up to 192 GB of DDR5 ECC or non-ECC UDIMM memory
- Features four dual-channel DIMM slots for memory configurations
- Provides two M.2 slots for NVMe solid-state drives
- Equipped with four SATA III connectors for storage drives
- Includes two PCIe 4.0 x16 slots for expansion cards
- Offers dual Gigabit Ethernet ports for network connectivity
- Designed in a compact 1U rackmount form factor
- Features six rear USB 3.2 Gen 1 ports, HDMI, and DisplayPort outputs
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- manual pdf (English)


