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Pass Thru Module II worked flawlessly in enclosure.
854194-B21
HPE 10GbE Pass-Thru Module II
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854194-B21
- Description:
- HPE 10GbE Pass-Thru Module II
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854194-B21 Overview
854194-B21 is engineered with a robust, modular architecture that delivers high performance and scalability in demanding enterprise environments. It features flexible power options with an AC power supply supporting redundancy, advanced Ethernet ports including a mix of standard and SFP uplinks, and a stacking design that facilitates seamless network expansion.
Optimized for consistent uptime and efficient network management, this managed switch offers exceptional throughput and low latency for data-intensive applications. Its design supports critical use cases ranging from campus networks and data centers to branch offices, ensuring reliable connectivity and enhanced overall network performance.
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854194-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
- 24 Ports
- Manageable
- Managed
- Ethernet Technology
- 10/100/1000
- Media Type Supported
- Combo
- Redundant Power Supply Supported
- Yes
- Manufacturer Part Number
- 854194-B21
- Uplink Configuration
- 1G
- IOS
- IP Services
- POE Support
- POE+
- SFP Ports
- 4 SFP Ports
- Memory
- 256 MB
- Rack Units
- 1 RU
- Interface Ports
- 10/100/1000
- Port/Expansion Slot Details
- Standard 24-port configuration with 4 SFP uplink slots
- Flash Memory
- 64 MB
- Switching Capacity
- 128 Gbps
- Switching Capacity with Stacking
- 256 Gbps
- Product Name
- 854194-B21 Enterprise-Grade Managed Switch
- Height
- 1.75 inches
- Width
- 17.5 inches
- Depth
- 12 inches
- Weight
- 15 lbs
854194-B21 Use Case
Data Center Server Aggregation for High-Density Environments
In large-scale data centers managing hundreds of rack-mount servers, the HPE 854194-B21 10GbE Pass-Thru Module II provides direct, non-blocking 10 GbE connectivity to each server port. By eliminating switching latency and simplifying cabling, IT teams achieve predictable, low-jitter throughput for real-time analytics and database replication. Benefit: Maximizes port-to-server density, reduces network contention, and delivers sub-microsecond latency for mission-critical workloads.
Accelerated High-Performance Computing (HPC) Clusters
Research institutions and engineering firms deploying GPU-accelerated HPC clusters rely on the HPE 10GbE Pass-Thru Module II to deliver point-to-point 10 GbE links between compute nodes and storage appliances. The module’s wire-speed forwarding ensures deterministic packet delivery for MPI and RDMA traffic. Benefit: Drives parallel processing efficiency, lowers job turnaround time by up to 30 %, and maintains consistent network performance under heavy simulation loads.
Virtualization and Cloud-Ready Host Connectivity
Enterprises running VMware, Hyper-V or KVM hypervisors in converged infrastructure use the 854194-B21 pass-thru module to assign dedicated 10 GbE NICs to virtual hosts. With direct blade-to-edge-switch paths, this solution supports live migration, high-availability clustering, and multitenant segmentation without the overhead of virtual switching. Benefit: Improves VM I/O throughput by 50 %, simplifies network troubleshooting, and accelerates cloud-scale deployment with guaranteed bandwidth per tenant.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
 854194-B21 |  C8R43A |  751465-B21 |  C8S45A |  Q0U59A | |
|---|---|---|---|---|---|
| Depth | 12 inches | 12 inches | 10 inches | 11 inches | 14 inches |
| Ethernet Technology | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 |
| Flash Memory | 64 MB | 64 MB | 64 MB | 64 MB | 64 MB |
| Form Factor | Rack-mount | Rack-mount | Rack-mount | Rack-mount | Rack-mount |
| Height | 1.75 inches | 1.75 inches | 1 inches | 1 inches | 1.75 inches |
| IOS | IP Services | IP Services | IP Services | IP Services | IP Services |
| Interface Ports | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 |
| Layer Supported | Layer 2 | Layer 2 / Layer 3 | Layer 2 | Layer 2 / Layer 3 | Layer 2 / Layer 3 |
| Manageable | Managed | Managed | Managed | Managed | Managed |
| Manufacturer Part Number | 854194-B21 | C8R43A | 751465-B21 | C8S45A | Q0U59A |
| Media Type Supported | Combo | Combo | Twisted Pair | Twisted Pair / Fiber / Combo | Twisted Pair / Fiber / Combo |
| Memory | 256 MB | 256 MB | 256 MB | 256 MB | 256 MB |
| Number of Downlink Ports | 24 Ports | 24 Ports | 8 Ports | 8 Ports | 24 Ports |
| Number of Ethernet Ports | 24–48 Ports | 24–48 Ports | 24–48 Ports | 12–24 Ports | 24–48 Ports |
| POE Support | POE+ | POE+ | POE+ | POE+ | POE+ |
| Port/Expansion Slot Details | Standard 24-port configuration with 4 SFP uplink slots | 24 Gigabit Ethernet ports, 4 SFP slots | 2 expansion slots available | 12 Ethernet ports with 4 SFP uplink slots | 2 expansion slots for additional modules |
| Power Consumption | 75 W | 85W | 150 W | 48 W | 120W |
| Power Source | AC Power Supply | Redundant Power Supply / AC Power Supply | AC Power Supply | Redundant Power Supply / AC Power Supply | Redundant Power Supply / AC Power Supply |
| Product Name | 854194-B21 Enterprise-Grade Managed Switch | C8R43A High-Performance Rack-Mount Switch | 751465-B21 Enterprise Rack-Mount Switch | C8S45A Advanced Enterprise Switch | Q0U59A SmartStack 9000 |
| Product Type | Switch | Switch | Switch | Switch | Switch |
| Rack Units | 1 RU | 1 RU | 1 RU | 1 RU | 1 RU |
| Redundant Power Supply Supported | Yes | Yes | Yes | Yes | Yes |
| SFP Ports | 4 SFP Ports | 4 SFP Ports | 4 SFP Ports | 4 SFP Ports | 12 SFP Ports |
| Switching Capacity | 128 Gbps | 128 Gbps | 64 Gbps | 128 Gbps | 176 Gbps |
| Switching Capacity with Stacking | 256 Gbps | 256 Gbps | 128 Gbps | 256 Gbps | 352 Gbps |
| Uplink Configuration | 1G | 10G | 1G | 1G / 10G | 10G |
| Weight | 15 lbs | 15 lbs | 15 lbs | 12 lbs | 12 lbs |
| Width | 17.5 inches | 17.5 inches | 18 inches | 17 inches | 17.5 inches |
Reviews & Ratings
M
Martin Shepard
4
Consistent Ethernet connectivity across blades.
V
Victor Downs
5
Simple and reliable blade networking.
A
Andrew Pike
3
Easy installation and stable performance.
J
Julian Wood
4
Dependable pass through option.
Questions & Answers
What is the HPE 10GbE Pass-Thru Module II (SKU: 854194-B21)?
The HPE 10GbE Pass-Thru Module II (854194-B21) is a high-performance, low-latency network interconnect that provides direct 10 GbE connectivity from HPE servers to external switches or routers.
Which HPE servers are compatible with the 854194-B21 module?
The module is certified for HPE ProLiant Gen9, Gen10 and select HPE Synergy compute modules, ensuring plug-and-play 10 GbE connectivity without additional adapters.
How many network ports does this pass-thru module provide?
The HPE 10GbE Pass-Thru Module II offers 16 copper RJ-45 10 GbE ports, delivering dedicated bandwidth and predictable performance for each server network uplink.
What cable types are supported by the HPE 10GbE Pass-Thru Module II?
It supports standard Cat6a and Cat7 copper cables up to 100 meters, enabling cost-effective, high-speed connectivity in typical data center environments.