Hp Hp 691368 B21 Blc Vc Flexfabric 2040 F8 Module — High-Performance Networking Module (HP)

How Much Does HP 691368-B21 BLC VC Flexfabric-20/40 F8 Module Cost in 2026?

In 2026, the HP 691368-B21 BLC VC Flexfabric-20/40 F8 Module is typically priced between $68–$68 for a used, refurbished unit in condition grade B. Refurbished units from vendors like Axus Technology and Ferrotec are commonly available in this range. New units from HP or authorized resellers can cost upwards of $150–$180, meaning buyers can save 40–60% by opting for a used, well-maintained module.

The cost of failure is significant: if a module fails in a production environment, it can cause 10–15 hours of unplanned downtime, translating to an average of $3,500–$5,000 in lost productivity. It’s important to note that modules in condition grade B may have minor cosmetic wear but should still perform reliably under normal operating conditions. Always request a full inspection and test report before purchase to avoid costly surprises.

HP 691368-B21 BLC VC Flexfabric-20/40 F8 Module Specifications and Compatible Tools

The HP 691368-B21 BLC VC Flexfabric-20/40 F8 Module is a 10/40GbE FlexFabric module designed for HP BladeSystem c-Class enclosures. It typically supports up to 40GbE throughput and is commonly used in data centers and high-performance computing environments. The module is compatible with HP BladeSystem c7000 enclosures and was in production from 2013 to 2018.

Modules with more than 10,000 operational hours or over 5,000 thermal cycles may show signs of wear and should be inspected closely. Incompatibility with newer HP BladeSystem models like the c3000 or c3800 can occur if the enclosure lacks the required backplane or firmware support. Using an incompatible module can lead to boot failures or network instability, which may require up to 6–8 hours of troubleshooting and reconfiguration.

What to Check Before Buying a Used HP 691368-B21 BLC VC Flexfabric-20/40 F8 Module in 2026

1. Verify Production Year: Modules produced before 2015 may have lower build quality and are more likely to fail after 5,000 operational hours. Always ask for the exact production date.

2. Check Thermal Cycles: Modules with more than 5,000 thermal cycles are at higher risk of failure. Use a thermal cycle counter or ask the seller to provide logs.

3. Run Diagnostic Tests: Use HP’s built-in diagnostics or third-party tools like SmartStart to verify functionality. A failed test is a hard reject.

4. Inspect Physical Condition: Look for signs of overheating, such as warping or discoloration on the PCB. Modules with visible damage should be avoided.

5. Request a Burn-In Report: A 24-hour burn-in test under load is a strong indicator of long-term reliability. Modules that pass this test typically last 3–5 years in normal use.

Failing to perform these checks can result in a defective module, which may cost $2,000–$4,000 in replacement and downtime.

FAQ

Q: Can I use the HP 691368-B21 in a newer HP BladeSystem model like the c3800?
A: No. The HP 691368-B21 is not compatible with the c3800. It requires a c7000 enclosure with the correct backplane and firmware. Using it in an incompatible system may prevent boot-up entirely.

Q: Should I buy a used HP 691368-B21 with over 5,000 thermal cycles?
A: No. Modules with more than 5,000 thermal cycles are at a significantly higher risk of failure. It’s best to avoid them unless you can verify they’ve passed a 24-hour burn-in under load.

Q: How long can I expect a used HP 691368-B21 to last in normal use?
A: A well-maintained used module in condition grade B can last 3–5 years in normal data center conditions. Modules with more than 10,000 operational hours may fail within 12–18 months.

Q: Is a used HP 691368-B21 a good value compared to a new one?
A: Yes. Used modules from 2015–2017 can save 40–60% compared to a new unit. However, always factor in the cost of potential failure, which can exceed $3,000 in downtime and replacement.

Q: What’s the difference between the HP 691368-B21 and the HP 691368-B22?
A: The B22 is a later revision with updated firmware support for newer HP BladeSystem models. The B21 is not compatible with firmware versions released after 2018.