Asus

Asus RS521A-E12-RS12U-20TW1G Server Barebone System - 2U Rack-mountable - Socket SP5 - 1 x Processor Support - 1

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SKU:
21428489
MPN:
rs521a-e12-rs12u-20tw1g
Availability:
Usually ships the same or next business day. In stock at our MS warehouse.
Shipping:
Calculated at Checkout
Stock Update:
08/10/2026 04:41:31 PM PST
$2,615.81
Stock Update:
08/10/2026 04:41:31 PM PST
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Description



This item is brand-new, factory sealed.

5th Generation AMD EPYC Processors with AMD 3D V-Cache technology ASUS RS521A-E12-RS12U was designed to accelerate application performance leveraging accelerator cards and storage scalability. With the CPU and memory configured in a front parallel design that enables efficient airflow for excellent thermal performance, RS521A-E12-RS12U is optimized for rack placement. Featuring the single processor in a 2U chassis, RS521A-E12 series delivers the right-sized rack server dimensions for price sensitive applications and meets the demanding computing requirements.
RS521A-E12-RS12U Server Barebone System 1 x AMD EPYC 9005 Series Processor With 24*DDR5 DIMM up to 5200Mhz PCIe Gen5 slots Max 2x DW GPU cards supported Rack-optimized Design 12 x 3.5" Hot-swap HDD bays

Features

Environmental Compliance:   
Restriction of Hazardous Substances (RoHS)

 

Specs

Controllers
RAID SupportedYes
Controller Type
  • NVMe
  • Serial ATA/600
Power Description
Maximum Power Supply Wattage2000 W
Number of Power Supplies Installed2
Frequency
  • 50 Hz
  • 60 Hz
Input Voltage
  • 120 V AC
  • 230 V AC
Processor
Number of Processors Installed1
Processor SupportedEPYC
Processor SocketSocket SP5
64-bit ProcessingYes
Number of Processors Supported1
Chipset
Chipset ManufacturerAMD
Physical Characteristics
Form FactorRack-mountable
Weight (Approximate)39.57 lb
Height3.5"
Width17.7"
Rack Height2U
Depth33.1"
I/O Expansions
Number of 2.5" Bays2
Total Number of Expansion Slots6
Number of PCI Express x8 Slots1
Number of M.2 Interfaces2
Number of PCI Express x16 Slots5
Number of Total Expansion Bays14
Number of 3.5" Bays12
Memory
Memory TechnologyDDR5 SDRAM
Maximum Memory Supported2 TB
Total Number of Memory Slots24
Display & Graphics
Graphics Memory Capacity64 MB
Graphics Controller ManufacturerASPEED
General Information
Brand NameAsus
Manufacturer Website Addresshttp://usa.asus.com
Marketing Information5th Generation AMD EPYC Processors with AMD 3D V-Cache technology
ASUS RS521A-E12-RS12U was designed to accelerate application performance leveraging accelerator cards and storage scalability. With the CPU and memory configured in a front parallel design that enables efficient airflow for excellent thermal performance, RS521A-E12-RS12U is optimized for rack placement. Featuring the single processor in a 2U chassis, RS521A-E12 series delivers the right-sized rack server dimensions for price sensitive applications and meets the demanding computing requirements.
Product TypeServer Barebone System
Product NameRS521A-E12-RS12U-20TW1G Server Barebone System
ManufacturerASUS Computer International
Manufacturer Part Number90SF03X1-M000W0
Product ModelRS521A-E12-RS12U-20TW1G
Product SeriesRS521A-E12
Storage
Supported Storage Drive Interfaces
  • Serial ATA III
  • PCI Express NVMe 5.0 x4
  • PCI Express NVMe 4.0 x4
Supported Storage Drive Types
  • SSD
  • HDD
Interfaces/Ports
Network (RJ-45)Yes
Number of VGA Ports1
Total Number of USB Ports4
Number of USB 3.2 Gen 1 Ports4
Number of Network (RJ-45) Ports3
Network & Communication
Ethernet TechnologyGigabit Ethernet
Operating System
Operating System Supported
  • Windows Server 2022
  • Ubuntu 24.2

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Warranty Information

All Items are Brand New, Factory Sealed and come with a standard warranty. [Read our policies]
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Asus RS521A-E12-RS12U-20TW1G Server Barebone System - 2U Rack-mountable - Socket SP5 - 1 x Processor Support - 1
$2,615.81