ASUS ExpertCenter Pro ET500A B8 AMD Barebone Workstation
ASUS ExpertCenter Pro ET500A B8 Barebone Workstation is a flexible AMD AM5 professional platform for engineering, design, virtualization, content creation and demanding business workloads.
Brand: ASUS· More from ASUS ›- Model
- ExpertCenter Pro ET500A B8
- MPN
- 90WS0091-M000B0
Key features
- AMD AM5 workstation barebone platform
- AMD B850 chipset
- Supports AMD Ryzen 9000, 8000 and 7000 Series processors
- Supports AMD EPYC 4005 Series desktop processors
- ECC and non-ECC unbuffered memory support
- Professional NVIDIA RTX PRO graphics support
- ISV-certified workstation platform
- Designed for CAD, 3D design, media creation and virtualization
- Processor, memory, storage and operating system sold separately unless configured
ASUS ExpertCenter Pro ET500A B8 AMD Barebone Workstation
ASUS ExpertCenter Pro ET500A B8 is an AMD AM5 professional workstation barebone for engineering, CAD, 3D design, content creation, virtualization, technical computing and demanding business workloads. The platform combines AMD B850 chipset flexibility, ECC-capable DDR5 memory, professional graphics support and reliable business-management features.
Build the workstation around a compatible AMD Ryzen 9000, 8000 or 7000 Series processor, or an AMD EPYC 4005 Series desktop processor. Dual 2.5Gb Ethernet, fast NVMe storage expansion and multiple display outputs make it a practical base for a custom studio, office or IT deployment.
AMD Professional Platform with ECC-Capable DDR5 Memory
ExpertCenter Pro ET500A B8 supports a broad AMD desktop processor range: Ryzen 9000, 8000 and 7000 Series CPUs, plus AMD EPYC 4005 Series desktop processors. This lets organisations choose a configuration that suits their expected compute requirements, cost target and professional software environment.
Four DDR5 UDIMM slots support ECC or non-ECC unbuffered memory, with system capacity up to 256GB. ECC-capable memory is useful for long-running professional workloads because it can help detect and correct certain data errors, supporting workstation stability in design, data and compute-intensive environments.


Professional GPU and PCIe Expansion
The system includes two expansion slots. With compatible Ryzen 9000/7000 Series or EPYC 4005 Series processors, the primary slot offers PCIe 5.0 x16 support, while the second slot supports PCIe 4.0 x4 through the B850 chipset. Actual link capability varies with the installed processor family.
The chassis supports one compatible dual-slot professional graphics card, including selected NVIDIA RTX PRO and NVIDIA RTX workstation models. This makes ET500A B8 a flexible base for GPU-accelerated 2D/3D work, rendering, visualization, AI-assisted workloads and specialist creative applications.
Fast NVMe Storage, SATA Capacity and RAID
ET500A B8 supports two M.2 SSDs plus four SATA 6Gb/s connections and four internal 2.5-inch/3.5-inch drive bays. With compatible Ryzen 9000/7000 or EPYC 4005 processors, the first M.2 slot supports PCIe 5.0 x4 and the second supports PCIe 4.0 x4. AMD RAIDXpert2 support provides RAID 0, 1, 5 and 10 options for compatible configurations.
2 x M.2 NVMe
Install 2242, 2260 or 2280 M.2 SSDs for operating system, applications, projects and cache workloads.
4 x SATA 6Gb/s
Add high-capacity SATA storage for media, project archives, local datasets or business file retention.
RAID-Ready
AMD RAIDXpert2 supports compatible RAID configurations for performance, capacity or data-redundancy planning.
Dual 2.5GbE and Four-Display Flexibility
Two Intel 2.5Gb Ethernet ports provide higher bandwidth than standard Gigabit networking for NAS access, shared project storage, faster internal file movement and efficient media workflows. They also offer flexibility for network segmentation or multi-network business environments.
Onboard display connectivity includes HDMI, DisplayPort, VGA and USB-C DisplayPort Alt Mode, supporting up to four independent displays with compatible processor and display configurations. Front USB 20Gbps Type-C and rear USB 10Gbps Type-C/Type-A ports help connect modern storage, peripherals and professional accessories.

Management, Reliability and Serviceability
ASUS Control Center Express
Integrated monitoring and management tools help IT teams supervise endpoints, inventory and updates across business environments.
ISV-Certified Platform
ASUS tests compatibility with key professional applications to support reliable deployment for creative and technical users.
Tool-Less Storage Service
A service-friendly design helps simplify storage-drive installation and replacement, supporting better uptime and maintenance.
ASUS ExpertCenter Pro ET500A B8 Specifications
| Model | ASUS ExpertCenter Pro ET500A B8 |
|---|---|
| MPN | 90WS0091-M000B0 |
| Product type | AMD AM5 barebone professional workstation |
| CPU platform | 1 x AM5 socket; AMD Ryzen 9000/8000/7000 Series and AMD EPYC 4005 Series desktop processors |
| Chipset | AMD B850 chipset |
| Memory | 4 x DDR5 UDIMM slots; dual-channel ECC or non-ECC DDR5 5600; system support up to 256GB |
| Expansion | Primary PCIe 5.0 x16 slot with compatible Ryzen 9000/7000 or EPYC 4005 CPUs; second PCIe 4.0 x4 slot; exact links vary by CPU |
| GPU support | One compatible dual-slot NVIDIA RTX professional graphics card; selected AMD Radeon AI PRO graphics supported |
| M.2 storage | 2 x M.2 Key M slots for 2242/2260/2280 drives; PCIe 5.0/4.0 support varies by installed CPU |
| Other storage | 4 x SATA 6Gb/s, 4 internal 3.5-inch/2.5-inch drive bays and AMD RAIDXpert2 RAID support |
| Networking | 2 x Intel 2.5Gb Ethernet |
| Front I/O | 1 x USB 20Gbps Type-C, 2 x USB 5Gbps Type-A, headphone and microphone ports |
| Rear I/O | 2 x USB 10Gbps Type-A, 2 x USB 10Gbps Type-C (one with DisplayPort Alt Mode), 3 x USB 2.0, DisplayPort, HDMI, VGA, dual 2.5GbE, COM, audio and BIOS FlashBack |
| Displays | Up to four independent displays through HDMI, DisplayPort, VGA and USB-C Alt Mode, with compatible configuration |
| Management | ASUS Control Center Express |
| Dimensions | 423 x 190 x 435 mm |
| Power options | 300W Bronze, 550W Gold or 750W Gold ATX options, depending on system configuration |
| Configuration note | CPU, memory, graphics, storage and OS are separate unless NationalPC configures the system |
Ideal Applications for ET500A B8
CAD and Engineering
Configure the AMD AM5 platform for technical design, modelling, visualization and engineering applications.
3D and Media Creation
Add professional RTX graphics and fast NVMe SSDs for editing, 3D, rendering and content production.
Virtualization and Development
Build a high-memory AMD workstation for virtual machines, testing, local development and data-heavy tasks.
AI-Assisted Creation
Pair with a compatible professional GPU for locally accelerated AI, analytics and visual workflows.
Networked Studios
Use dual 2.5GbE for high-speed NAS access, team file transfer and networked project collaboration.
Managed Business IT
Use ASUS Control Center Express and serviceable storage design for more practical workstation deployment.
Official ASUS ExpertCenter Pro ET500A B8 Image Gallery

Frequently Asked Questions
Enquire About ASUS ExpertCenter Pro ET500A B8 at NationalPC
Configure an AMD AM5 professional workstation with the right Ryzen or EPYC processor, ECC memory, professional graphics and storage for your workflow.
Buy Now NationalPC| Total PCIe Slots | 2 |
|---|---|
| Ryzen 9000/7000 and EPYC 4005 | PCIe 5.0 x16 Slot, x16 Mode |
| Ryzen 8000 | PCIe 4.0 x16 Slot, x8/x4 Mode |
| B850 Chipset Slot | PCIe 4.0 x16 Physical, x4 Mode |
| Brand | ASUS |
|---|---|
| Product Type | Professional Workstation |
| Product Family | ExpertCenter |
| Official Model | ExpertCenter Pro ET500A B8 |
| Part Number | 90WS0091-M000B0 |
|---|
| Memory Type | Dual-Channel DDR5-5600 ECC / Non-ECC UDIMM |
|---|---|
| Memory Channels | 2-Channel |
| DIMM Slots | 4 |
| Maximum Capacity | Up to 256GB UDIMM |
| Supported Module Sizes | 8GB / 16GB / 32GB / 64GB UDIMM |
| Configuration | CPU, RAM, storage, GPU, OS and PSU vary by exact SKU and regional offer |
|---|
| Ryzen Options | Windows 11 Pro / Windows 11 Home |
|---|---|
| EPYC 4005 Option | Windows Server 2025 Non-Preinstall |
| CPU Socket | 1 x AM5 |
|---|---|
| Processor Support | AMD Ryzen 9000 / 8000 / 7000 Series and AMD EPYC 4005 Series Desktop Processors |
| Chipset | AMD B850 |
| M.2 Slots | 2 |
|---|---|
| M.2 Slot 1 with Ryzen 9000/7000 or EPYC 4005 | M.2 2242/2260/2280 PCIe 5.0 x4 |
| M.2 Slot 2 with Ryzen 9000/7000 or EPYC 4005 | M.2 2242/2260/2280 PCIe 4.0 x4 |
| M.2 with Ryzen 8000 | M.2_1 PCIe 4.0 x4 and M.2_2 PCIe 4.0 x4/x2 |
| SATA Ports | 4 x SATA 6Gb/s |
| RAID | AMD RAIDXpert2 RAID 0/1/5/10 |
| Internal Bays | 4 x 3.5-inch / 2.5-inch |
|---|
| Operating Temperature | 10°C to 35°C |
|---|---|
| Non-Operating Temperature | -40°C to 70°C |
| Non-Operating Humidity | 20% to 90% Non-Condensing |
| GPU Support | Up to 1 Dual-Slot Professional Graphics Card |
|---|---|
| Supported Examples | NVIDIA RTX PRO 4000 Blackwell 24GB / RTX PRO 2000 Blackwell 16GB / RTX 2000 Ada 16GB / A1000 8GB / A400 4GB / ASUS TURBO Radeon AI PRO R9700 |
| Power Supply Options | 300W Bronze / 550W Gold / 750W Gold ATX |
|---|
| Regulatory | BSMI / CE / FCC / EPEAT / KCC / CCC |
|---|
| LAN | 2 x Intel 2.5Gb Ethernet |
|---|
| Optional | 8x DVD+/-RW 9.5mm / 4-in-2 Smart Card Reader |
|---|
| USB-C | 1 x USB 20Gbps Type-C |
|---|---|
| USB-A | 2 x USB 5Gbps |
| Audio | 1 x Headphone / 1 x Microphone |
| Net Weight | 15.82 kg |
|---|---|
| Gross Weight | 18.51 kg |
| Dimensions | 423 x 190 x 435 mm |
| USB-A | 2 x USB 10Gbps Type-A |
|---|---|
| USB-C | 2 x USB 10Gbps Type-C, one with DisplayPort Video Output |
| USB 2.0 | 3 x USB 2.0 Type-A |
| DisplayPort | 1 |
| HDMI | 1 |
| VGA | 1 |
| LAN | 2 x Intel 2.5Gb Ethernet |
| Serial | 1 x COM |
| Audio | 2 x Audio Jacks |
| BIOS FlashBack | 1 x Button |
| ASUS Control Center Express | Supported |
|---|
| Accessories | Smart Card Reader / DVD-ROM / McAfee Anti-Virus / OS / Keyboard and Mouse / Print Port Cable |
|---|
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