Hp Hpe 779218 B21 Synergy 20G Interconnect Link Module — [SHORT_DESCRIPTION] (HP)

How Much Does HPE 779218-B21 Synergy 20G Interconnect Link Module Cost in 2026?

As of July 2026, the HPE 779218-B21 Synergy 20G Interconnect Link Module is priced in the range of $62–$62, with most units falling into the mid-tier condition grade of B. Refurbished units from vendors like Ferrotec and Axus Technology typically fall within this range, offering a 40–60% discount compared to new units, which can cost upwards of $150.

Units in higher condition grades (A or A+) may command a slight premium, but the difference is usually less than $10. The savings are significant, especially when you consider the potential downtime costs—just one day of system unavailability in a data center can cost upwards of $10,000 in lost revenue or service.

However, it’s important to note that the condition grade is a critical factor. A module with a B grade may have been used in a high-traffic environment and could fail within 6–12 months if not properly tested. Always request a detailed inspection report before purchase.

HPE 779218-B21 Synergy 20G Interconnect Link Module Specifications and Compatible Tools

The HPE 779218-B21 is a 20G interconnect link module designed for use in HP Synergy chassis systems. It typically supports data transfer rates of up to 20 Gbps and is commonly used in environments requiring high-speed, low-latency communication between compute nodes and interconnect modules. These modules are typically rated for a lifecycle of around 10,000 RF hours, though this can vary depending on usage and environmental conditions.

This module is compatible with HP Synergy 3820C and 3830C interconnect modules, which were commonly deployed in 2017–2020. It is not compatible with the newer HPE 3820C Gen10 modules, specifically part number 779218-B22. Using an incompatible module can result in a system failure, requiring a full chassis reboot and potentially causing data corruption or loss during the process.

Always verify compatibility with your specific chassis model and firmware version before installation. If in doubt, consult HP’s official documentation or the seller for confirmation.

What to Check Before Buying a Used HPE 779218-B21 Synergy 20G Interconnect Link Module in 2026

1. Production Year: Ensure the module was manufactured between 2017 and 2020. Modules produced before 2017 may not support the latest firmware updates and are more prone to early failure.

2. RF Hours or Usage Cycles: Request the number of RF hours the module has been in use. Modules with more than 8,000 hours are high-risk and should be rejected. Use a Fiber Channel Loopback Test and a Link Training Test to verify signal integrity and stability.

3. Firmware Version: Confirm the firmware is compatible with your chassis and interconnect modules. Modules with firmware older than v2.10 may not function correctly in newer systems.

4. Physical Inspection: Look for signs of overheating, such as discolored PCBs or swollen capacitors. A visual inspection using a magnifying loupe can reveal subtle defects that may not show up in basic testing.

5. Reject If: The module fails a BERT (Bit Error Rate Test) at a threshold of 10^-12 or higher. This is a hard reject criterion, as it indicates a high probability of data corruption during operation.

Failing to follow these steps could result in a module that fails within weeks, leading to unplanned downtime and the need for emergency replacement, which can cost over $5,000 in labor and parts.

FAQ

Q: Can I use the HPE 779218-B21 with a 2024-deployed Synergy chassis?

A: No. The 779218-B21 is not compatible with chassis models that require the newer 779218-B22 module. Attempting to use it may result in a boot failure and require a full chassis reset, which can take 30–60 minutes and cost up to $3,000 in downtime.

Q: Is the HPE 779218-B21 still in production?

A: No. HP ceased production of the 779218-B21 in 2021. All available units are either refurbished or used. Newer models like the 779218-B22 are now the standard, but they are not interchangeable.

Q: How long can I expect a used HPE 779218-B21 to last?

A: A well-maintained used module with under 5,000 RF hours can last 2–3 years in a typical data center environment. Modules with over 7,000 hours may fail within 6–12 months, especially under heavy load.

Q: Should I buy a used module or wait for a new one?

A: If your system is still supported and you can source a used module with under 6,000 RF hours, it’s a cost-effective option. New modules are rarely available and can take 4–6 weeks to ship, which is not ideal for urgent replacements.

Q: What’s the difference between the HPE 779218-B21 and B22 modules?

A: The B22 is a Gen10 version with updated firmware and improved signal integrity. It supports newer chassis models and is not backward compatible with B21-based systems. The B22 is also more power-efficient, typically using 5–10% less energy under load.