ASUS RS521A-E12-RS12U-20TW1G 2U Server
2U single-socket rack server engineered for surveillance infrastructure, virtualization, and storage-intensive deployments requiring high memory
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The ASUS RS500A-E10-RS12U is a 1U single-socket server barebone designed for compact datacenter and surveillance infrastructure deployments. At 38 pounds and measuring 24.21 inches in length, 17.48 inches in width, and 1.73 inches in height, this chassis fits standard 19-inch rack configurations without consuming excessive vertical space — critical when you're stacking multiple recording nodes or edge-compute appliances in a security operations center.
This is a barebone system, meaning the processor, memory, and storage are not included. You configure the RS500A-E10-RS12U with your choice of compatible CPU, RAM, and drives to match your specific workload — network video recorder (NVR) duties, metadata processing, or hybrid surveillance and access-control integration. The compact footprint makes it ideal for facilities where rack real estate is at a premium but throughput and reliability cannot be compromised.
The RS500A-E10-RS12U is a platform, not a finished appliance. You pair it with a compatible ASUS server-grade motherboard (single-socket AM4 or EPYC platform, depending on configuration), a CPU, and your choice of RAM and storage to build a custom NVR or edge server. This flexibility means you can:
At 24.21 inches long, 17.48 inches wide, and 1.73 inches tall, the RS500A-E10-RS12U occupies exactly one rack unit (1U) of vertical space. This density means a standard 42U rack can accommodate 42 of these units stacked vertically — a powerful advantage in surveillance deployments where you need to record 100+ camera streams across multiple sites and cannot dedicate an entire room to infrastructure per location.
The 38-pound weight is a practical consideration for installation: one technician can safely mount and secure the chassis without assistance, reducing labor time and on-site coordination burden during commissioning or replacement cycles.
Unlike pre-built servers, the RS500A-E10-RS12U requires you to source and install a motherboard, CPU, RAM, and storage separately. This is not a limitation — it's an advantage if your surveillance environment has specific requirements. For example:
This modular approach appeals to integrators and system designers who already maintain relationships with CPU and memory distributors and who benefit from component flexibility and cost control.
Q: Does the RS500A-E10-RS12U come with a CPU, RAM, or storage?
A: No. This is a barebone chassis only. You select and install a compatible single-socket CPU (ASUS AM4 or EPYC, depending on the motherboard you choose), RAM, and storage drives separately.
Q: What motherboards and CPUs are compatible with the RS500A-E10-RS12U?
A: Compatibility depends on the specific barebone configuration variant. Check the ASUS product documentation for your exact RS500A-E10-RS12U SKU to confirm supported chipsets and socket types. Most 1U ASUS server barebone units support either AM4 (Ryzen) or EPYC (EPYC 7000/9000 series) processors.
Q: Can I use the RS500A-E10-RS12U as an NVR in a video surveillance system?
A: Yes. When paired with appropriate CPU, RAM, and storage, it serves as a platform for commercial NVR software (Milestone XProtect, Hikvision iVMS, Genetec) or open-source VMS (Zoneminder, Shinobi). Ensure your motherboard and CPU selection support the OS and software stack you plan to deploy.
Q: What is the power consumption of the RS500A-E10-RS12U?
A: Power draw depends on the CPU, RAM, and storage you install. Contact ASUS technical support or consult the motherboard and CPU datasheets for your specific configuration. A typical single-socket 8-core configuration draws 150–250W under full load.
Q: Does the RS500A-E10-RS12U support hot-swap drives?
A: Hot-swap capability depends on the motherboard and drive cage configuration you select during build-out. Confirm the specific ASUS motherboard specifications to verify hot-swap SATA or NVMe slot support.
Q: What is the warranty on the RS500A-E10-RS12U barebone chassis?
A: Warranty terms vary by region and distributor. Check the product documentation or contact your supplier for specific warranty coverage and duration on this barebone unit.

The ASUS RS500A-E10-RS12U is built for facilities that understand the value of a platform over a pre-assembled box. At 1.73 inches tall and 38 pounds, this barebone chassis solves a real problem: you need recording and processing horsepower in a space-constrained environment, but you refuse to overpay for CPU cores, memory capacity, or storage you'll swap out immediately on day two.
Technical Highlights:
Deployment Considerations:
Deploy the RS500A-E10-RS12U in multi-site surveillance networks where you operate 5–30 small-to-medium recording nodes per location and need to keep footprint, power cost, and spares logistics manageable across a distributed infrastructure. Ideal for casinos, retail chains, parking facilities, or municipal video networks running consolidated NVR clusters.
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