PCIe Gen5 x16 eGPU Expansion Chassis








Key Features:
Dedicated x16 lanes of host-to-device PCIe Gen5 bandwidth
Universal GPU Compatibility: Supports industry standard full-height, 2-slot and 3-slot NVIDIA, AMD, Intel, etc. GPUs
Addresses the growing power demands of modern GPUs (up to 850W)
Seamless, Plug-and-Play Software-less Installation for Linux & Windows Platforms


Product | RocketStor 8631CW |
Bus Interface | PCI-Express 5.0 x16 |
Hardware Architecture | Broadcom PEX 89048 PCIe Switch Technology |
CooprLink Compliant | Yes (CDFP Pin Definition) |
Number of Channel / Devices | 1 x CDFP (Dedicated PCIe 5.0 x16 per port) |
Port Type | CDFP (Gen5) |
Data Transfer Rate | 64GB/s |
Power Measurement | Yes |
Number of GPU Supported | 1 |
GPU Support | Full-height, 2-slot and 3-slot GPUs |
Up to 370mm x 170mm (to Gold Finger) x 88mm & below | |
Power Measurement | Real Time Power Measurement |
Audible Alarm | High Temperature, Low-Fan Speed Warnings |
Smart Fan Control | Dynamically adjusts fan speed to address changing temperature conditions |
Manually Select from 5 Speed settings (Ultra-Low to Full) | |
Enclosure Dimensions | 17.25" x 11.26" x 6.10" |
Product Weight | 12.10 lbs. |
Front Panel LEDs | |
Power Switch | Powers On/Off the unit. Illuminates blue when powered On. |
Back Panel | |
CDFP Port | Upstream Port for PCIe 5.0 1x16 |
Mute Button | used to mute the audible alarm |
Supported Systems | |
OS Support | Any OS with native PCIe device support |
Software Secure Boot | Yes |
Hardware Secure Boot | Yes |
Management Software | |
Firmware Upgrade Tools (MPT Utility) | Used to upgrade both the MCU firmware and Retimer Firmware |
Operating Environment | |
Work Temp | +5°C ~ + 55°C |
Storage Temp | -20°C ~ +80°C |
Operating Voltage | 100V ~ 240V AC In |
Power Supply | 1300W |
Kit Contents | |
RocketStor 8631CW | 1x RocketStor 8631C Enclosure |
1x R1634D Adapter | |
1x Gen5 CopprLink Cable (1M) | |
1x QIG | |
4x 2x4 connectors to 2x4 connectors Cable | |
1x UL Cable | |
RocketStor 8631C | 1x RocketStor 8631C Enclosure |
1x Gen5 CopprLink Cable (1M) | |
1x QIG | |
4x 2x4 connectors to 2x4 connectors Cable | |
1x UL Cable | |
Accessories | |
Optional Accessories | Rocket 7638D PCIe 5.0 x16 External Expansion Adapter |
Rocket 7634D PCIe 5.0 x16 External Expansion Adapter |
RocketStor 8631CW: PCIe Gen5 x16 eGPU Expansion Chassis
HighPoint’s RocketStor 8631CW is a high-performance eGPU expansion chassis designed for applications requiring high bandwidth and low latency. The RocketStor PCIe GPU Expansion chassis represents the industry's only true dedicated PCIe Gen5 x16 solutions, designed to unlock the full potential of top-tier NVIDIA, AMD, and Intel GPUs. This breakthrough technology is ideal for platforms constrained by limited PCIe slot space or encounter performance bottlenecks with Thunderbolt or OcuLink solutions.
Key Features:
Unrestricted Performance: Industry Leading PCIe Switching technology guarantees x16 lanes of dedicated Gen5 bandwidth
Universal GPU Compatibility: Support industry standard full-height, 2-slot, and 3-slot GPUs from all leading manufacturers.
Directly Provides up to 850W of power for high-end GPUs
Robust, Enterprise Grade External PCIe x16 CDFP Gen5 connectivity
Low-profile host interface adapter is Ideal for compact systems
Advanced Dual-Fan Cooling System with Programmable Smart Fan Control prevents thermal throttling
Seamless, Plug-and-Play Software-less Installation for Linux & Windows Platforms
Industry Leading PCIe Switching Architecture
RocketStor 8631CW is powered by HighPoint’s revolutionary PCIe Gen5 Switching Architecture, which leverages Broadcom’s industry-leading PEX89048 IC to optimize signal integrity, minimize latency, and maximize data transfer speed.This solution provides 48 lanes of internal PCIe Gen5 bandwidth; 16 lanes to the upstream connection for both the host platform and GPU; achieves a maximum data transfer rate of 64GB/s; and minimizes latency through optimized design and components.

Advanced Field Service Feature Suite

FRU (Field Replicable Unit) Support: Rocket 1634D is field replaceable units (FRU); the VPD stored on each adapter enables customers and service providers to easily procure replacements with the correct firmware/driver combination.
Superior Performance and Universal GPU Compatibility
Leveraging industry-leading PCIe switching technology, the RocketStor 8631CW ensures x16 host-to-device bandwidth, delivering unrestricted performance for demanding workloads, superior performance than conventional Thunderbolt or OCuLink solutions.
The RocketStor 8631CW supports a wide range of full-height, 2-slot, and 3-slot GPUs from leading manufacturers like NVIDIA, AMD, and Intel, making it a versatile choice for diverse computing needs.

Advanced Cooling System
To maintain optimal performance, the RocketStor 8631CW features a robust dual-fan cooling system with programmable smart fan control. This system effectively dissipates heat, preventing thermal throttling and ensuring that your system runs at peak performance even under heavy loads.

Pro-Active Hardware Monitoring System
The RocketStor 8631CW includes automated smart modes and manual operation flexibility, paired with an intuitive user interface that tracks and logs the status of the GPU, enclosure, and hostAdapter hardware in real time. Additionally, the product is equipped with hardware monitoring capabilities, including GPU operating status, electrical characteristics, fan control features, GPU/enclosure temperature, and PCIe connection status, providing comprehensive insights into system health and performance.


Elegant & Robust: CopprLink Connectivity & Power Delivery
Equipped with external CopprLink cables, the RocketStor 8631CW offers enterprise-grade reliability and low-latency connectivity, ensuring seamless and high-performance data transfer for demanding workloads.
The chassis provides up to 850W of direct power, ensuring that even the most power-hungry GPUs operate at peak performance.

Available as Turnkey Expansion Kits or External Enclosure Accessories
RocketStor 8600 series external expansion solutions are avaiable as complete turnkey expansion kits, consisting of the enclosure hardware, cabling & CDFP/CopprLink adapter, or as stand-alone external enclosures.
Target Audience & Applications: AI Infrastructure Architects, HPC System Builders, Gen Platform Integrators, Enterprise IT
This family represents the pinnacle of external PCIe fabric technology. Designed for Gen5 host platforms, these enclosures deliver the fastest data transfer speeds and TDP support for next-generation accelerators.
Model | PCle Generation | TDP Power Support | Primary Use Case | Buy Now |
|---|---|---|---|---|
RocketStor 8631D | Gen5 x16 | 1300W PSU | Designed for professional/enterprise applications that demand maximum TDP for today's high-end GPUs, FGPAs, and I/O Accelerators | Buy Now |
RocketStor 8631C | Gen5 x16 | 850W/600W PSU | High-speed external PCle Gen5 expansion for mid-range GPUs and NICs. | Buy Now |
RocketStor 8631CW | Gen5 x16 | 850W/600W PSU | Full-Kit version of the RocketStor 8631C (includes external PCle CDFP adapter card) | Buy Now |
Applications and Use Cases
The design and performance of the RocketStor 8631CW make it suitable for applications that require high performance scaling. Its high bandwidth, low latency, high scalability, and flexible storage configurations make it ideal for AI/ML Computing & Deep Learning,Scientific Research & Big Data Analytics,Enterprise Workloads & Cloud Solutions,High-Performance Content Creation & Rendering,High-End Gaming/Media Platforms.
AI/ML Computing & Deep Learning

Use Cases: Neural Networks training, running AI algorithms, & real-time data analytics
Benefits: Accelerates data loading and model training times, supporting high-throughput data processing.
Scientific Research & Big Data Analytics

Use Cases: Applications that process immense volumes of data such as real-time analytics and business intelligence applications
Benefits: Rapid access to massive datasets, results in faster analytics and insights generation.
High-Performance Content Creation & Rendering

Use Cases: AAA Gaming and Esports,Virtual Reality (VR) and Augmented Reality (AR),AI-Powered Gaming and Media Production
Benefits: The HighPoint RocketStor 8531AW is the ultimate solution for professionals in the content creation and rendering industries, offering the power, flexibility, and performance needed to turn creative visions into reality.
High-End Gaming/Media Platforms

Use Cases: Applications that process immense volumes of data such as real-time analytics and business intelligence applications
Benefits: Whether you're chasing victory in competitive esports, creating immersive virtual worlds, or delivering high-quality live streams, this solution empowers you to achieve exceptional performance and immersive experiences.
Frequently Asked Questions
The RocketStor 8000 Series are professional eGPU expansion enclosures that allow compact servers, mini-PCs, and workstations to fully harness the power of modern GPUs through dedicated PCIe Gen5 or Gen4 x16 bandwidth.
HighPoint has added a fully integrated 850W PSU and a smart cooling system to the RocketStor 8631CW and 8531AW enclosures, ensuring stable power delivery and efficient thermal management for demanding Gen5 GPUs.
Gen5 GPUs consume more power and experience transient power spikes. The 850W PSU provides the sustained current required to maintain stable performance during AI, HPC, and graphics-intensive workloads.
They support full-height, full-length (up to 370mm), 2-slot and 3-slot GPUs from all major manufactures including NVIDIA, AMD, and Intel.
These enclosures are ideal for professionals working with:
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AI/LLM training
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High-performance computing (HPC)
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3D design, CAD/CAM, VFX
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Scientific research
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Integrated power and temperature sensors monitor GPU activity in real time, adjusting fan speed to prevent thermal throttling and maintain maximum performance.
No. The RocketStor 8000 series enclosures feature a plug-and-play, driver-less design for Windows and Linux platforms.
RocketStor 8000 series HighPoint eGPU enclosure RS8000 RocketStor 8631CW RS8631CW
eGPU Expansion Chassis
Product | PCle | Port Type | # of Devices | CDFP Hotswap | Data Transfer Rate |
|---|---|---|---|---|---|
RocketStor 8631CW | PCIe 5.0 x16 | CDFP (Gen5) | 1 x CDFP (Dedicated PCIe 5.0 x16 per port) | No | 64GB/s |
RocketStor 8531AW | PCIe 4.0 x16 | CDFP (Gen4) | 1 x CDFP (Dedicated PCIe 4.0 x16 per port) | No | 32GB/s |
PCIe Gen5 Solutions
Product | PCle | Ports | # of Devices | Hot-Swap | SSD FF |
|---|---|---|---|---|---|
Rocket 7624A | PCIe 5.0 x16 | 2x MCIO 8x | Up to 4 | Yes | Direct Connect U.2/U.3; Backplane Connection: ESDFF devices such as U.2/U.3/E1.S |
Rocket 7628A / Rocket 7628U | PCIe 5.0 x16 | 4x MCIO 8x | Up to 32 | Yes | Direct Connect U.2/U.3/E3.S;
Backplane Connection: ESDFF devices such as U.2/U.3/E1.S/E3.S |
PCIe Gen4 (2nd-Gen) Solutions
Product | PCle | Ports | # of Devices | Hot-Swap | SSD FF |
|---|---|---|---|---|---|
Rocket 7528D | PCIe 4.0 x16 | 4x SlimSAS (SFF-8654 8x) | Up to 32 | Yes | Direct Connect U.2/U.3;
Backplane Connection: ESDFF devices such as U.2/U.3/E1.S |
PCIe Gen4 Solutions
PCIe Gen3 Solutions
Product | PCle | Ports | # of Devices | Hot-Swap | SSD FF |
|---|---|---|---|---|---|
SSD7180 | PCIe 3.0 x16 | 8x MiniSAS | Up to 8 | N/A | Direct Connect U.2/U.3;
Backplane Connection: U.2/U.3 |
SSD7120 | PCIe 3.0 x16 | 4x MiniSAS | Up to 4 | N/A | Direct Connect U.2/U.3;
Backplane Connection: U.2/U.3 |
SSD7184 | PCIe 3.0 x16 | 4x Int. & 4x Ext. MiniSAS | Up to 8 | N/A | Direct Connect U.2/U.3; Backplane Connection: U.2/U.3 |
NOTE: Please email to GeneralSales@highpoint-tech.com for more information about upgrading to latest software and documents.
NOTE: Please email to GeneralSales@highpoint-tech.com for more information about upgrading to latest software and documents.
NOTE: Please email to GeneralSales@highpoint-tech.com for more information about upgrading to latest software and documents.
HighPoint NVMe Switch Adapters and Systems from our Partners
Model | Product Image | Port Types | Primary Use Case | Buy Now |
|---|---|---|---|---|
Rocket 7634D | 1x External CopprLink-CDFP | External PCIe Gen5 x16 CDFP Adapter Card | Buy Now | |
Rocket 7638D | 1x External CopprLink-CDFP, 2x MCIO (internal) | External PCIe Gen5 x16 Switch Adapter | Buy Now |
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