NEC ExpEther GPU Expansion and NVMe FPGA PCI-E Over Ethernet for Crypto Mining 3D Simulation Virtual Reality IoT AI Low Latency Storage Deep Learning

$6,298.00 $5,725.00

NEC ExpEther is a technology that can extend PCI Express beyond the confines of a computer chassis via Ethernet without any modification of existing hardware and software. It leverages 40G technology and uses Ethernet infrastructure to help accelerate real-time Big Data processing. The technology enables you to install large number of GPUs and NVMe SSDs without adding new servers every time so you can scale as you grow your computational or storage needs. The GPU / SSD / FPGA expansion box/chassis can be miles away because it uses ethernet technology and also can be shared by multiple servers which lowers your cost of ownership.

This technology is also extremely suitable for Internet of Things (IoT) where you can have remote sensor data processed in almost real time away from the sensor (example – in a large factory automation environment. With the world’s most advanced GPUs populated, this expansion box is particularly suited for maximum acceleration of highly parallel applications like Artificial Intelligence (AI), Deep Learning, Machine Learning, Autonomous Machines, Self-Driving Cars,Big Data Analytics, IoT, Smart Cities, Health Care, Oil & Gas Research,Computer Aided Design (CAD), Virtual/Augmented Reality, HPC,  Virtualization, Database Processing, and General IT & Cloud Enterprise Applications.

Key Features

  • Plug-n-Play system (No FW/SW installation needed at server!)
  • Server architecture independent, OS independent, PCIe device type independent.
  • Can work effectively with low-end servers.
  • Can perform P2P communication without any server involvement.
  • Multiple servers having ExpEther HBAs can share remote PCIedevices, leading to efficient utilization of PCIe devices.
  • Supports & qualified with growing pool of GPUs, FPGA Accelerators and NVMe SSD device models.
  • Uses NEC proprietary hardware security engine “Twine”for safe & reliable data communication over Ethernet.
  • Simple to Integrate & Use
  • I/O Resource sharing
  • I/O Device Support
  • Security(Encryption)

You can buy compatible NVIDIA Tesla GPU right here at Dihuni.



Price shown is for ExpEther Server Adapter (N8104-165) and IO Expansion Box (N8141-80F) ready for 2 GPU or another PCI-Express add-on component, NVMe storage etc. For 4 GPU/PCI-E expansion please see option below. 

We accept all major credit cards e.g. MasterCard, Visa, American Express, Discover etc. Please review our Terms and Conditions and Return, Refund and Repair policy prior to purchase.

Additional Options

You can select options for more GPU slots and rackmount kit.

Purchase Orders or Tax Exempt?

You can attach a Purchase Order to send with your order. If you are eligible for tax exemption, please attach your Government Tax Exempt Permit/Reseller’s Certificate etc. We will refund you the tax portion for your order after we validate your tax exempt status. If you would like to request Net Terms, please also send credit references for our Accounting and select Bank/Wire Transfer or Check Payment at checkout. Please combine all your documents in 1 file.

(max file size 128 MB)


GroundBreaking GPU and PCI-E Expansion Technology

The ExpEther technology enables system expansion by connecting PCI Express devices directly, using an Ethernet infrastructure. As the ExpEther keeps the native PCI Express connectivity, the PCI Express devices can also be operated as a single system, despite being distributed in different locations connected by Ethernet. This process enables standard PCI Express configurations, interruptions, and hot plugging to be remotely performed with an Ethernet LAN, as if they were connected to a virtual single-hop PCI Express switch.

NEC’s ExpEther 40G technology delivers a compelling solution for real-time Big Data processing and other data center workload acceleration. It does so by enabling the connection of GPGPU, NVMe SSD, or FPGA-based accelerators via an Ethernet connection. NEC has closely collaborated with Xilinx, a fellow ExpEther Consortium member, to validate and enable the ExpEther 40G technology as either an IP core or an ExpEther platform leveraging Xilinx UltraScale™ FPGAs. NEC launched the IP core business in January 2016.

ExpEther 40G provides customers with the following advantages:

  • Since all connections with the computing resources can be dynamically reconfigured, ExpEther40G technology optimizes the utilization rate.
  • Original software assets can be used without changing the device drivers, even when all resources are connected via Ethernet.
  • The service platform enables the scalability needed to process Internet of Things (IoT) solutions and big data projects in real time, especially in the area of high-performance servers, which have difficulty in utilizing ExpEther 1G/10G.

Artificial Intelligence and Deep Learning Use Cases

Deep Learning systems constantly require more computational power and adding new servers is always not practical. The ExpEther allows you to keep adding supercomputing power over ethernet and helps save time and money in realizing value from ongoing research.

Components of ExpEther

Host Bus Adapter on Server
  • 40GbE QSFP+ x 2 ports  (80Gbps)
  • x8 PCI Express 3.0  (8GT/s)
  • PCIe Low Profile Form-factor
  • Manufactured by NEC Corporation

I/O Expansion Box


Expansion Box
  • 40GbE QSFP+ x 4 ports
  • PCI Express 3.0 (8GT/s) x 4 slots (x8 lanes / x16 slot)
  • Full height / Full length PCI Express Card
  • Manufactured by NEC Corporation

Technical Specifications

Item Product Name/No. 2Slot:ExpEther I/O Expansion Unit (40G)-2S, N8141-80F 4Slot: ExpEther I/O Expansion Unit (40G)-4S, N8141-81F
PCI Express Slot Spec. PCI Express 3.0
Lane x8 (Mechanical x16)
LinkSpeed 8.0Gbps(Gen3)
Number of Slots 2/4
PCIcard size Full Height/ Full Length / Double Width size
LAN I/F Port# 4
Speed 40Gbps (Single pass) / 80Gbps(Multiple pass)
Connector QSFP+
Cable length 3m(Copper)/ 100m(Fiber)
Other Connector Management LAN 10 –100Mbps (for Expansion Chassis management)
Power 1000W AC 100 –240V / 7.08AMAX with fan (100V), 12.47A MAX with fan (240V)
Dimension (WxHxD) 142mm x 131mmx 396mm
Accessories GPU Power cablex 2

Additional information

Weight 40 lbs
Dimensions 15.6 x 5.6 x 5.1 in

Why Dihuni?

Dihuni was formed to simplify Digital Transformation. The internet has changed everything – from software applications to compute, storage and networking hardware. At Dihuni, we believe every business is transforming to enable digital customer outcomes and our mission is to ensure we can enable you with the right hardware, software and services to make that happen. Believe us, no matter which application you are working on today, you are helping transform the world into a Digital place. Some of the reasons to trust your business to us :

World Class Partners

Dihuni partners with world class companies such as Dell, HPE, Lenovo, Supermicro, Intel, Microsoft and several other top Software and Hardware companies. We carefully select best-in-class technology and business partners and work with them on strategy, product roadmap and solutions development to ensure we not only provide you the best product but also help our partners enhance their offerings. With our deep rooted partnerships and relationships with product teams, we are able to escalate any product issue or provide new requirements based on your feedback directly to our partners.  Our partnerships offer you the best in the following areas :

  • Server, Storage and Networking Hardware
  • Cloud Services
  • Internet of Things (IoT)
  • Software Development – Onshore (US) and Offshore
  • Operating Systems
  • Consulting 
  • Federal Contracting

High Quality Manufacturing for Standard Products

We leverage the manufacturing capabilities of our partners and work closely with them to customize your system. Instead of adding more complexity in shipping individual parts, integrating and testing it at facilities that require constant maintenance, we work closely with our OEM partners and use their expertise and operations so they can build a high quality system that is suitable for your exact application. By doing this, we are able to not only control manufacturing costs and pass on the savings to you but also deliver a system directly from our partner to you in any part of the world. At Dihuni, we ensure and select partners who adhere to rigorous design implementation, manufacturing standards and ISO standards to ensure that its products are produced with the highest quality and reliability. Our partners integrate only the best quality parts and components into their system boards, servers, and chassis. To ensure excellent performance even under extreme operating conditions, our products undergo rigorous environmental and intense computational testing. These quality efforts optimize system performance and minimize system downtime for you to have an extremely reliable system from Dihuni.

Focus on Solution, Not Just Hardware

We know you are looking for hardware as part of a solution that you are implementing. With our experience in software as well as real world IT implementation, we help you select the right product that fits your solution. There is huge complexity in implementing a successful solution regardless of whether you are a software developer wanting a fast developer machine or if you are involved in developing an efficient on-premise and cloud back-end infrastructure for your IT or Internet of Things (IoT) applications or setting up the right systems for data, analytics, Machine Learning, Artificial Intelligence (AI) and Digital Applications. We help you through your needs regardless of the size of your project and your budget. 

Experience Matters

Our leadership has over 20 years of experience in designing, developing, manufacturing and shipping servers and embedded/IoT systems in high volume. With direct experience with companies such as Dell, NEC, Supermicro, Honeywell, BSDi etc, we are experts in effective product management and will help you with every need you may have. We carefully select each product that we carry and understand the target applications for your systems. Utilizing our experience in software, we also provide Digital Transformation and Agile software development consulting services should you need help with any of your projects in IoT, IT etc.

We Really Believe in Customer Service

We believe and have implemented best practices in product design, development and more importantly customer service. This thinking is permeated throughout our company. We offer :

  • High Quality Products and Consultation on product positioning and suitability
  • Competitive Pricing
  • Fast response times
  • On-time Delivery
  • Completely customized systems and services including
  • Phone and Onsite Support including Manufacturer’s Support
  • Marketing opportunity for your project and case studies

We appreciate your business! Please call us at 703-436-4721 or email us at for any question or information. We respond promptly and you can contact us even during weekends.

You may also like…