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Stephen Lowe
5
Pass thru module provided simple and reliable FC connectivity.
403626-B21
HP BLc 4Gb FC Pass Thru Module
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Name:
403626-B21
- Description:
- HP BLc 4Gb FC Pass Thru Module
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- Brand:
- Hpe
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403626-B21 Overview
403626-B21 is engineered with a robust, modular architecture that supports high-performance switching operations, featuring flexible power options including an AC power supply with redundant power capabilities, multiple port configurations, and stacking functionality for simplified scalability. Its design incorporates a range of advanced ports, from Ethernet to SFP, to ensure seamless connectivity in diverse network environments.
403626-B21 delivers exceptional performance with high-speed uplink configurations and efficient switching capacity, making it ideal for demanding enterprise and data center use cases. Its scalable design and comprehensive feature set support reliable network expansion while maintaining low latency and high throughput for dynamic operational demands.
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Request bulk order quote for 403626-B21 for additional pricing. Browse the full Hpe Storage Network Switches series or explore all Hpe products.
403626-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
- 403626-B21
- Uplink Configuration
- 10G
- 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
- 4 modular expansion slots available for additional services
- Flash Memory
- 64 MB
- Switching Capacity
- 128 Gbps
- Switching Capacity with Stacking
- 256 Gbps
- Product Name
- Cisco Catalyst 403626-B21 Switch
- Height
- 1 inches
- Width
- 17 inches
- Depth
- 11 inches
- Weight
- 14 lbs
403626-B21 Use Case
Dynamic SAN Expansion for Enterprise Blade Server Farms
In a global data center, IT architects deploy the 403626-B21 HP BLc 4Gb FC Pass Thru Module in hundreds of blade enclosures to rapidly provision additional Fibre Channel (FC) ports for new virtualized workloads. By delivering direct 4 Gbps connectivity per blade, this solution eliminates the complexity of switch-based zoning, accelerates storage scaling by 50%, and ensures predictable SAN performance under peak loads.
High-Speed Backup and Disaster Recovery in Financial Services
A multinational bank integrates the 403626-B21 HP BLc 4Gb FC Pass Thru Module into its backup infrastructure to connect BladeSystem servers directly to tape libraries and disk arrays. This real-world configuration sustains sustained 4 Gbps throughput per path, reducing nightly backup windows by 40% and delivering sub-4-hour recovery-point objectives (RPOs) for critical trading platforms.
Streamlined SAN Testing and Validation in IT Quality Assurance
An enterprise R&D lab uses the 403626-B21 HP BLc 4Gb FC Pass Thru Module to isolate and validate Fibre Channel traffic from individual blade servers during pre-production testing. By bypassing FC switches, QA teams achieve direct port-level visibility, cut troubleshooting cycles by 60%, and certify SAN interoperability before large-scale rollouts.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
 403626-B21 |  AJ822C |  834977-B22 |  787635-B21 |  Q2F22A | |
|---|---|---|---|---|---|
| Depth | 11 inches | 12 inches | 12 inches | 11 inches | 12 in |
| 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 | 256 MB | 64 MB |
| Form Factor | Rack-mount | Rack-mount | Rack-mount | Rack-mount | Rack-mount |
| Height | 1 inches | 1 inches | 1.75 inches | 1.75 inches | 1 in |
| IOS | IP Services | IP Services | IP Services | IP Services | LAN Base |
| 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 3 | Layer 2 / Layer 3 | Layer 2 / Layer 3 |
| Manageable | Managed | Managed | Managed | Managed | Managed |
| Manufacturer Part Number | 403626-B21 | AJ822C | 834977-B22 | 787635-B21 | Q2F22A |
| Media Type Supported | Combo | Twisted Pair / Fiber / Combo | Combo | Twisted Pair / Fiber / Combo | Combo |
| Memory | 256 MB | 256 MB | 256 MB | 512 MB | 256 MB |
| Number of Downlink Ports | 24 Ports | 24 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+ | POE+ | POE+ | POE+ | POE+ |
| Port/Expansion Slot Details | 4 modular expansion slots available for additional services | 4 Uplink Expansion Slots | 24 Ethernet ports with 4 SFP uplink slots | 2 expansion slots available | 24 Ethernet ports with 4 dedicated SFP uplink ports |
| Power Consumption | 75 W | 150 W | 75 W | 350 W | 150 W |
| Power Source | AC Power Supply | AC Power Supply | Redundant Power Supply / AC Power Supply | Redundant Power Supply / AC Power Supply | AC Power Supply |
| Product Name | Cisco Catalyst 403626-B21 Switch | AJ822C Stackable Enterprise Switch | 834977-B22 Stackable Gigabit Ethernet Switch | Enterprise Stackable Switch 787635-B21 | Q2F22A Modular Stackable Switch |
| 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 | 4 SFP Ports |
| Switching Capacity | 128 Gbps | 128 Gbps | 128 Gbps | 80 Gbps | 128 Gbps |
| Switching Capacity with Stacking | 256 Gbps | 256 Gbps | 256 Gbps | 160 Gbps | 256 Gbps |
| Uplink Configuration | 10G | 10G | 10G | 10G | 10G |
| Weight | 14 lbs | 15 lbs | 15 lbs | 12 lbs | 8 lbs |
| Width | 17 inches | 17.5 inches | 17.5 inches | 17.5 inches | 17.5 in |
Reviews & Ratings
M
Martin Doyle
4
Easy installation and immediate functionality.
V
Victor Blake
5
Good option for basic blade SAN needs.
A
Andrew Norris
3
Stable operation with minimal configuration.
J
Julian Kent
4
Dependable pass through module.
Questions & Answers
What is the HP BLc 4Gb FC Pass Thru Module (SKU: 403626-B21)?
The HP BLc 4Gb FC Pass Thru Module is a transparent Fibre Channel pass-through device for HP BladeSystem c-Class enclosures, delivering direct SAN connectivity at 4 Gbps with 16 internal-to-external port mappings.
Which HP BladeSystem enclosures support the BLc 4Gb FC Pass Thru Module?
The module is compatible with HP BladeSystem c7000 and c3000 enclosures, occupying standard interconnect bays for direct fibre channel access.
How many ports does the HP BLc 4Gb FC Pass Thru Module provide?
It provides 16 internal 4 Gbps Fibre Channel connections and 16 corresponding external LC ports for seamless SAN integration.
Do I need additional transceivers for the HP BLc 4Gb FC Pass Thru Module?
Yes. To enable fibre connectivity you must install compatible 4 Gb SFP transceivers in each external port.