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834976-B21
- Description:
- Mellanox IB EDR 36P Unmanaged Switch:HPCD InfiniBand Accessories
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3 Year Extended Warranty
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Standard ground delivery across the U.S. takes 2–6 days, depending on your location — no extra charge.
International Shipments Made Simple
For all international orders, we ship via your UPS, FedEx, or DHL account — or to your U.S.-based freight forwarder.
Delivery Timelines
Under 100 KG? Ships Express.
Smaller shipments go via DHL or FedEx Express — delivered worldwide in approximately 3 business days.
Over 100 KG? Ships via Freight.
Larger orders are dispatched through freight forwarding partners. Delivery takes 7–10 business days, globally.
Always Delivered to Your Door
Every shipment is delivered directly to your address — regardless of country or carrier.
Our best-in-class warranties
3-Year Extended Warranty
Extended protection, enterprise-grade.
All enterprise hardware is backed by a 3-year warranty — triple the industry standard — covering defects under normal use.
Professional repairs & replacements.
If a hardware issue is confirmed, we’ll repair or replace the unit. Replacement parts carry either original or 3-month coverage.
RMA process, simplified.
Once an RMA is approved, return the defective unit within 10 days. We handle the rest — no service gaps.
Service Boundaries & Exclusions
What’s covered — and what’s best avoided.
Your warranty covers defects under normal use. For continued protection, avoid accidental damage, unauthorized repairs, third-party parts, or extreme environments.
Know your location’s service type.
In some regions, return-to-factory or remote service may apply. On-site service depends on infrastructure availability.
Minimal documentation required.
To initiate service, just submit the invoice and warranty card — no red tape, no waiting.
14-Day Money Back Guarantee
Free 14-Day Returns
Tested it, but it’s not a fit?
Return any product within 14 days of delivery if it doesn’t meet your technical or operational needs.
Initiate returns with ease.
Our RMA process is streamlined — just raise a request, follow the packaging guidelines, and we’ll handle the rest.
Refund or restock, your call.
Changed your mind? Get a refund (restocking fees may apply) or swap with another product.
30-Day Hardware Replacement
Covered for any early faults.
All equipment includes a 30-day replacement warranty. If something goes wrong, we’ll repair or swap it — fast.
Replacements shipped in 10 days or less.
Once your return is inspected and approved, we dispatch the replacement promptly to keep your operations moving.
RMA protocol keeps it smooth.
Just ensure all accessories and original packaging are intact — we’ll take care of the technical validation.
TRUSTED, TRIED, PROVEN
834976-B21 Overview
834976-B21 is built on a robust, ASIC-based architecture that delivers high-performance switching with a streamlined design optimized for business networking. The switch offers versatile port configurations with both twisted pair and SFP uplink options, ensuring seamless connectivity and efficient power management via an AC power supply.
834976-B21 features reliable stacking capabilities and scalability designed to support growing enterprise networks, enabling simplified management and optimal throughput under heavy data loads. Its performance-centric design makes it ideal for campus networks, branch offices, and other use cases where consistent, secure connectivity is paramount.
What is the price of 834976-B21?
Pricing for 834976-B21 is available on request. Get immediate quote or for exclusive discounts, opt for bulk quotation for 834976-B21.
Explore more options from Switches or explore other Hpe products.
834976-B21 Specifications
| Product Type | Switch |
| Power Source | AC Power Supply |
| Layer Supported | Layer 2 |
| Form Factor | Rack-mount |
| Power Consumption | 75 W |
| Number Of Ethernet Ports | 24–48 Ports |
| Number Of Downlink Ports | 8 Ports |
| Manageable | Managed |
| Ethernet Technology | 10/100/1000 |
| Media Type Supported | Combo |
| Redundant Power Supply Supported | No |
| Manufacturer Part Number | 834976-B21 |
| Uplink Configuration | 1G |
| IOS | LAN Base |
| POE Support | POE+ |
| SFP Ports | 4 SFP Ports |
| Memory | 256 MB |
| Rack Units | 1 RU |
| Interface Ports | 10/100/1000 |
| Port/Expansion Slot Details | 24 POE+ Ethernet ports, 4 SFP uplink ports |
| Flash Memory | 64 MB |
| Switching Capacity | 128 Gbps |
| Switching Capacity With Stacking | 256 Gbps |
| Product Name | 834976-B21 24-Port Managed Gigabit Switch with POE+ |
| Height | 1 inch |
| Width | 17.5 inches |
| Depth | 14 inches |
| Weight | 12 lbs |
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
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| Depth | 14 inches | 12 inches | 18 inches | 11 inches | 12 inches |
| Ethernet Technology | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 |
| Flash Memory | 64 MB | 32 MB | 256 MB | 64 MB | 64 MB |
| Form Factor | Rack-mount | Rack-mount | Rack-mount | Rack-mount | Rack-mount |
| Height | 1 inch | 1 inch | 1.75 inches | 1.75 inches | 1 inches |
| Interface Ports | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 |
| IOS | LAN Base | LAN Base | IP Services | IP Services | IP Services |
| Layer Supported | Layer 2 | Layer 2 / Layer 3 | Layer 3 | Layer 2 / Layer 3 | Layer 2 / Layer 3 |
| Manageable | Managed | Managed | Managed | Managed | Managed |
| Manufacturer Part Number | 834976-B21 | JG225B | JH017A | JH018A | AK242B |
| Media Type Supported | Combo | Twisted Pair / Fiber / Combo | Combo | Combo | Combo |
| Memory | 256 MB | 256 MB | 512 MB | 256 MB | 256 MB |
| Number of Downlink Ports | 8 Ports | 8 Ports | 24 Ports | 24 Ports | 24 Ports |
| Number of Ethernet Ports | 24–48 Ports | 24–48 Ports | 24–48 Ports | 24–48 Ports | 24–48 Ports |
| POE Support | POE+ | Non POE | POE+ | POE+ | POE+ |
| Port/Expansion Slot Details | 24 POE+ Ethernet ports, 4 SFP uplink ports | N/A | 2 Expansion slots available | 24 fixed Ethernet ports with 4 SFP uplink ports | N/A |
| Power Consumption | 75 W | 120 W | 150 W | 75 W | 120W |
| Power Source | AC Power Supply | Redundant Power Supply, AC Power Supply | AC Power Supply | AC Power Supply, Redundant Power Supply | AC Power Supply |
| Product Name | 834976-B21 24-Port Managed Gigabit Switch with POE+ | JG225B High-Performance Managed Switch | JH017A Modular Enterprise Switch | JH018A Next-Generation Stackable Switch | AK242B Enterprise Network Switch |
| Product Type | Switch | Switch | Switch | Switch | Switch |
| Rack Units | 1 RU | 1 RU | 1 RU | 1 RU | 1 RU |
| Redundant Power Supply Supported | No | Yes | Yes | Yes | Yes |
| SFP Ports | 4 SFP Ports | 4 SFP Ports | 4 SFP Ports | 4 SFP Ports | 4 SFP Ports |
| Switching Capacity | 128 Gbps | 128 Gbps | 320 Gbps | 128 Gbps | 128 Gbps |
| Switching Capacity with Stacking | 256 Gbps | 256 Gbps | 1280 Gbps | 256 Gbps | 256 Gbps |
| Uplink Configuration | 1G | 1G / 10G | 10G | 10G | 10G |
| Weight | 12 lbs | 15 lbs | 15 lbs | 12 lbs | 15 lbs |
| Width | 17.5 inches | 17.5 inches | 17.5 inches | 17.5 inches | 17 inches |
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Questions & Answers
Q
What is the Mellanox IB EDR 36P Unmanaged Switch (SKU: 834976-B21)?
A
The Mellanox IB EDR 36P Unmanaged Switch is a high-performance InfiniBand EDR (100 Gb/s) switch featuring 36 ports designed for low-latency, lossless HPC and AI cluster interconnects.
Q
What port speed and throughput does the IB EDR 36P switch support?
A
Each of the 36 EDR ports delivers up to 100 Gb/s full-duplex bandwidth, providing a total throughput of 7.2 Tb/s for demanding data-center workloads.
Q
What type of transceivers and cables are compatible with this switch?
A
The switch supports QSFP28 transceivers and passive/active copper or optical QSFP28 cables, enabling link distances from 0.5 m (DAC) up to 100 m (SR optics) or longer with LR optics.
Q
Is configuration required for the unmanaged EDR 36P switch?
A
No. As an unmanaged switch, it provides plug-and-play operation, auto-negotiation of port speeds, and does not require user configuration or a management interface.
Q
What is the typical port-to-port latency on this switch?
A
The IB EDR 36P switch delivers ultra-low port-to-port latency of approximately 90 ns, ensuring minimal communication delay for latency-sensitive applications.
Q
How much power does the Mellanox IB EDR 36P consume?
A
Under full load, the switch consumes up to 250 W, featuring efficient power supplies and variable-speed fans to optimize energy usage in data-center environments.
Q
Is the EDR 36P switch rack-mountable?
A
Yes. The unit fits a standard 1U rack slot (19″ cabinet) and includes mounting brackets and hardware for quick installation in server racks.
Q
Which operating systems and drivers are compatible with this switch?
A
The switch is OS-agnostic and interoperates with any operating system or RDMA-capable driver (Mellanox OFED for Linux, Windows HPC Server, VMware, etc.) using the InfiniBand protocol.
Q
Can the unmanaged EDR 36P switch integrate into a larger managed fabric?
A
Yes. It interoperates seamlessly with Mellanox and third-party fabric managers via standard InfiniBand routing and subnet management, although it offers no on-box management.
Q
What are the primary use cases for this InfiniBand EDR switch?
A
Ideal for HPC clusters, AI/ML training, data analytics, and storage networks requiring low-latency, high-bandwidth connectivity in a plug-and-play form factor.
Q
Does the switch support firmware updates?
A
Yes. Firmware can be updated via Mellanox’s Firmware Tools (MFT) over In-band or Out-of-band connections, ensuring access to the latest features and stability fixes.
Q
What warranty and support does the Mellanox IB EDR 36P include?
A
It comes with a one-year hardware warranty and access to Mellanox’s global support portal, with optional extended support and advanced replacement services available.
Q
What is the maximum recommended link distance for each port?
A
With passive copper QSFP28 cables, up to 5 m; active copper up to 10 m; SR optics up to 100 m; and LR optics can extend links beyond 200 m over single-mode fiber.
Q
How do I troubleshoot connectivity issues on the unmanaged switch?
A
Verify cable integrity, ensure QSFP28 modules are seated properly, check link LEDs for activity, and use InfiniBand diagnostic tools (ibstat, iblinkinfo) on host nodes.
Q
What distinguishes this unmanaged EDR switch from a managed switch?
A
Unmanaged switches offer plug-and-play simplicity with no CLI or GUI, while managed switches provide advanced features (QoS, VLANs, monitoring) and require configuration.
