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Asus

Asus RS521A-E12-RS12U Server Barebone System - 2U Rack-mountable - Socket SP5 - 1 x Processor Support - 1 x AMD EPYC 5th Gen

$2,800.00
$2,601.85 SAVE $198.15
None availableas of 08/15/2026

Ships when available. Free shipping on most items when you spend $100 or more.

Compliance and certifications

  • RoHS
Rated excellent by our customers Read our reviews

Secure checkoutISO 9001:2015 and CMMC certifiedFamily owned since 1982

Free shipping on most items when you spend $100 or more.

Real people answer: chat with us, email customerservice@colamco.com, or call 1-800-692-8757, Monday to Friday, 8am to 5pm EST.

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Secure checkoutISO 9001:2015 and CMMC certifiedFamily owned since 1982

Free shipping on most items when you spend $100 or more.

Real people answer: chat with us, email customerservice@colamco.com, or call 1-800-692-8757, Monday to Friday, 8am to 5pm EST.

Overview

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.

Technical specifications

General Information

Manufacturer ASUS Computer International
Manufacturer Part Number RS521A-E12-RS12U-20TW1G
Manufacturer Website Address http://usa.asus.com
Brand Name Asus
Product Series RS521A-E12
Product Model RS521A-E12-RS12U
Product Name RS521A-E12-RS12U Server Barebone System
Product Type Server Barebone System

Memory

Maximum Memory 2 TB
Memory Technology DDR5 SDRAM
Total Number of Memory Slots 24

Processor

Number of Processors Supported 1
Number of Processors Installed 1
Processor Socket Socket SP5
Processor Manufacturer AMD
Processor Type EPYC
Processor Generation 5th Gen
64-bit Processing Yes

Chipset

Chipset Manufacturer AMD

Storage

Supported Storage Drive Interfaces Serial ATA IIIPCI Express NVMe 5.0 x4
Supported Storage Drive Types SSD

Controllers

Controller Type NVMeSerial ATA/600
RAID Supported Yes

Display & Graphics

Graphics Controller Manufacturer ASPEED
Graphics Memory Capacity 64 MB

Network & Communication

Ethernet Technology Gigabit Ethernet

I/O Expansions

Number of Total Expansion Bays 14
Number of 3.5" Bays 12
Number of 2.5" Bays 2
Total Number of Expansion Slots 6
Number of PCI Express x8 Slots 1
Number of PCI Express x16 Slots 5
Number of M.2 Interfaces 2

Interfaces/Ports

Total Number of USB Ports 4
Number of USB 3.2 Gen 1 Ports 4
Network (RJ-45) Yes
Number of Network (RJ-45) Ports 3
Number of VGA Ports 1

Software

Operating System Supported Windows Server 2022Ubuntu 24.2

Power Description

Input Voltage 120 V AC230 V AC
Number of Power Supplies Installed 2
Maximum Power Supply Wattage 2000 W
Frequency 60 Hz50 Hz

Operating System

Operating System Supported Ubuntu 24.2Windows Server 2022

Physical Characteristics

Form Factor Rack-mountable
Rack Height 2U
Height 3.5"
Width 17.7"
Depth 33.1"
Weight (Approximate) 39.57 lb

Miscellaneous

Environmental Compliance Restriction of Hazardous Substances (RoHS)

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Shipping and returns

Free shipping on most items when you spend $100 or more. In-stock items ship on the next open shipment slot. The buy box above shows the live order-by countdown and the estimated arrival date.

Need to send it back? Start a return online with a Request RMA and our team will take care of you. Keep the original packaging. Items must be returned in the condition received.

Questions about shipping or returns? Chat with us, email customerservice@colamco.com, or call 1-800-692-8757, Monday to Friday, 8am to 5pm EST.