Asus RS500A-E9-RS4-U Barebone System - 1U Rack-mountable - AMD - Socket SP3 - 1 x Processor Support

$1,151.47
None availableas of 02/18/2026

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Compliance and certifications

  • RoHS
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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.

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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

About the Asus RS500A-E9 RS500A-E9-RS4-U

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Top performance in industry-standard SPEC benchmarks

RS500A-E9-RS4-U is built on AMD EPYC™ platform to deliver incredible server performance. With up to 32 cores per CPU and up to 64 threads, RS500A-E9-RS4-U packs incredible power in minimal space. 16 DIMM slots provide best-in-class memory capacity and bandwidth, and an integrated I/O controller on the processor

Flexible expansion for better storage and networking

RS500A-E9-RS4-U features one PCIe x16 and one PCIe x8 slots to deliver parallel computing power and one OCP 2.0 Mezzanine connector to support high-speed LAN card. This flexibility supports diverse storage and networking applications and ensures future expandability and high scalability in a 1U server.

RS500A-E9-RS4-U fits four 3.5-inch hot-swappable bays with choice of 32Gbps NVMe SSDs, 12Gbps SAS or 6Gbps SATA drives. One M.2 slot accommodate 22110-size SSDs with support for additional OS storage and PCIe Gen3 x4 bandwidth - 5.3X faster than 6 Gb/s SATA III - for faster boot speeds.

Exclusive Thermal Radar technology for energy efficiency

RS500A-E9-RS4-U features ASUS-exclusive Thermal Radar technology with ambient sensors placed in CPU, memory, NVMe, SSD, OCP mezzanine connector for internal and external temperature monitoring, and dynamic fan-curve adjustment, which lowers fan power consumption by up to 20% and reduces total cost of ownership - ideal for data centers with extreme workloads.

Redundant Platinum PSU support

RS500A-E9-RS4-U supports redundant 770W 80 Plus Platinum power supply, which are 96%+ efficient, directly reducing operating costs and capital expenses. The 1+1 power-supply design allows the server to keep working even if one power supply requires maintenance, enabling uninterrupted operation.

Comprehensive IT Infrastructure Management

RS500A-E9-RS4-U features an embedded iKVM module and is bundled with ASUS Control Center to provide comprehensive out-of-band and in-band management features for small and mid-size businesses.

The embedded ASMB9-iKVM module supports remote BIOS updates, fan control, standalone KVMs, video recording, and BSOD capture, providing around-the-clock remote monitoring and diagnostics - even if the operating system is down or offline - through a user-friendly, web-based graphical interface that works with all major browsers.

ASUS Control Center (ACC) is a centralized and integrated IT management platform for monitoring and controlling ASUS commercial products, including servers, workstations and digital signage. ACC enables remote BIOS updates, monitoring of multiple systems via mobile devices, and one-click software updates and dispatching, allowing easier server management for any IT infrastructure.

ASUS ProCool connector

ASUS ProCool power connectors are designed without any hollow areas, enabling lower impedance, faster heat dissipation and cooler operating temperatures for reduced power loss and increased cost savings.

Technical specifications

Technical Specifications of the Asus RS500A-E9 RS500A-E9-RS4-U

General Information

General Information specifications
Manufacturer ASUS Computer International
Manufacturer Part Number RS500A-E9-RS4-U
Manufacturer Website Address http://usa.asus.com
Brand Name Asus
Product Series RS500A-E9
Product Model RS500A-E9-RS4-U
Product Name RS500A-E9-RS4-U Barebone System
Product Type Barebone System

Memory

Memory specifications
Maximum Memory 2 TB
Memory Technology DDR4 SDRAM
Memory Standard DDR4-2666/PC4-21300
Total Number of Memory Slots 16

Processor

Processor specifications
Number of Processors Supported 1
Processor Socket Socket SP3
Processor Supported EPYC

Chipset

Chipset specifications
Chipset Manufacturer AMD

Controllers

Controllers specifications
Controller Type Serial ATA/60012Gb/s SAS

Display & Graphics

Display & Graphics specifications
Graphics Memory Capacity 64 MB

Network & Communication

Network & Communication specifications
Ethernet Technology Gigabit Ethernet

I/O Expansions

I/O Expansions specifications
Number of Total Expansion Bays 4
Number of 3.5" Bays 4
Total Number of Expansion Slots 3
Number of PCI Express x8 Slots 1
Number of PCI Express x16 Slots 1

Interfaces/Ports

Interfaces/Ports specifications
Total Number of USB Ports 4
Number of USB 3.0 Ports 4

Software

Software specifications
Operating System Supported CentOSUbuntu LinuxRed Hat Enterprise LinuxSuSE Linux Enterprise Server

Power Description

Power Description specifications
Input Voltage 120 V AC230 V AC
Number of Power Supplies Installed 2
Maximum Power Supply Wattage 770 W

Operating System

Operating System specifications
Operating System Supported SuSE Linux Enterprise ServerRed Hat Enterprise LinuxUbuntu LinuxCentOS

Physical Characteristics

Physical Characteristics specifications
Form Factor Rack-mountable
Rack Height 1U
Height 1.7"
Width 17.5"
Depth 24.3"
Weight (Approximate) 24.25 lb

Miscellaneous

Miscellaneous specifications
Green Compliant Yes
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.

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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.