Cisco Cisco 800 37538 01 2960 X Flexstack Plus Stacking Module — High-Performance Networking Component (Cisco)

How Much Does Cisco 800-37538-01 2960 X Flexstack Plus Stacking Module Cost in 2026?

As of June 2026, the Cisco 800-37538-01 2960 X Flexstack Plus Stacking Module is priced in the $18 range for used/refurbished units. This price is typically for B-grade components, which are commonly sourced from decommissioned or end-of-life Cisco Catalyst 2960-X switches. Refurbished units from vendors like Axus Technology and Covalent Materials typically fall within this range, offering buyers a 40–60% cost savings compared to new units, which can exceed $45–$50.

The cost of failure is significant if you install a defective or incompatible module. A failed stacking module can cause network outages lasting 4–8 hours, costing enterprises $1,500–$3,000 in downtime. Additionally, using a module with a mismatched firmware version can lead to stack instability, which may require a full stack reset and reconfiguration.

Condition is a key factor. Units with more than 10,000 RF-hours or those not tested for signal integrity are more likely to fail prematurely. Always request a full diagnostic report from the seller before purchase.

Cisco 800-37538-01 2960 X Flexstack Plus Stacking Module Specifications and Compatible Tools

The Cisco 800-37538-01 is a stacking module designed for the Cisco Catalyst 2960-X series switches, enabling FlexStack Plus connectivity. It typically supports up to 4 switches in a stack, with a stacking bandwidth of 16 Gbps per module. The module is commonly used in environments requiring high availability and redundancy, such as data centers and enterprise branch offices.

This module is compatible with the Cisco Catalyst 2960-X (2016–2019 production years) and 2960-XR (2018–2021) switches. It is not compatible with the 2960-S or 2960-L models due to different stacking protocols and physical form factors.

Failure of this module can lead to stack partitioning, which can result in partial or full network outages. Modules with more than 12,000 RF-hours or those not tested for signal integrity are more prone to failure. Always verify compatibility with your switch model and firmware version before installation.

What to Check Before Buying a Used Cisco 800-37538-01 2960 X Flexstack Plus Stacking Module in 2026

1. Verify Production Year: Ensure the module was manufactured between 2016 and 2019. Modules produced outside this range may not support FlexStack Plus protocols.

2. Check RF-Hours: Modules with more than 10,000 RF-hours are considered high-risk. Request a full diagnostics report from the seller.

3. Test Signal Integrity: Use a signal integrity tester or a protocol analyzer to confirm that the module can maintain a stable 16 Gbps link. Modules with signal degradation can cause stack instability.

4. Firmware Compatibility: Confirm the module’s firmware is compatible with your switch’s software version. Mismatches can lead to stack partitioning.

5. Reject If: The module shows signs of physical damage, such as bent pins or cracked connectors. A damaged module can cause permanent stack failure and require a full switch replacement, costing $2,000–$5,000 in parts and labor.

Buying a defective module can lead to extended downtime, with average repair times of 6–12 hours and potential data loss in mission-critical environments.

FAQ

Q: Can I use the Cisco 800-37538-01 in a Cisco 2960-S switch?
A: No. The 800-37538-01 is not compatible with the 2960-S due to different stacking protocols. Using it in a 2960-S can cause stack failure and require a full stack reset, which can take 4–6 hours.

Q: Should I buy a used Cisco 800-37538-01 module with 12,000 RF-hours?
A: No. Modules with more than 10,000 RF-hours are considered high-risk. A module with 12,000 RF-hours has a 60% higher failure rate within 6 months of installation.

Q: How long can a Cisco 800-37538-01 module last with proper maintenance?
A: With proper maintenance and under normal operating conditions, the module can last 5–7 years. Modules used in high-traffic environments may degrade faster and should be replaced after 4 years.

Q: What is the difference between the Cisco 800-37538-01 and the 800-37538-02?
A: The 800-37538-02 is a later revision with updated firmware and improved signal integrity. The 01 version is typically found in older 2960-X switches and may not support newer firmware updates.

Q: How much can I save by buying a used Cisco 800-37538-01 module?
A: You can save 40–60% compared to buying new. Used modules from Axus Technology or Covalent Materials typically cost $18, while new units can cost $45–$50.