Description
Product Introduction
The Enterasys C2RPS-PSM (now under Extreme Networks) is a modular 150-watt redundant power supply module designed for the SecureStack switch family. Built to sit inside C2RPS-CHAS2 (2-slot) or C2RPS-CHAS8 (8-slot) rack-mount enclosures, it delivers secondary DC power directly to target switches, keeping core edge and aggregation layers alive if an internal AC power supply fails.
In mission-critical enterprise campus networks, the C2RPS-PSM provides N+1 power redundancy without requiring full switch replacements. Because Enterasys/Extreme has legacy-sunsetted this hardware line, sourcing a fully bench-tested C2RPS-PSM is essential for maintaining network availability across aging infrastructure without initiating an unbudgeted, sitewide switch refresh.
Key Technical Specifications
| Parameter | Specification |
| Manufacturer | Enterasys Networks / Extreme Networks |
| Part Number | C2RPS-PSM |
| Product Category | Redundant Power Supply Module (RPS) |
| Compatible Chassis | -CHAS2 (2-slot) and -CHAS8 (8-slot) |
| Compatible Switches | SecureStack C2, C3, C5, B3, and B5 Series |
| AC Input Voltage | 100 VAC to 240 VAC (Auto-ranging, 50/60 Hz) |
| Max Output Power | 150 Watts DC Output |
| Output Voltage Rail | +12V DC |
| Cooling Method | Internal variable-speed cooling fan |
| Operating Temperature | 0°C to 50°C (32°F to 122°F) |
| Physical Dimensions | 19.6 cm x 5.2 cm x 25.7 cm (7.7″ x 2.04″ x 10.1″) |
| Weight | Approx. 3.85 lbs (1.75 kg) |
| Lifecycle Status | Obsolete / Discontinued |
Application Scenarios & The “Trench” Experience
It is 8:15 AM on a Monday, and an internal power supply component shorts out inside a core SecureStack C2 switch driving a hospital’s triage network bay. Without redundant power, 48 Ethernet drops go offline simultaneously. Because the rack is backed up by a C2RPS-CHAS8 chassis fitted with C2RPS-PSM modules, the switch never reboots; the RPS instantly picks up the 12V DC load rail. Swapping out a failed secondary module takes seconds: loosen two captive thumbscrews, slide in a verified replacement C2RPS-PSM, and verify the green “DC OK” LED illuminates—all while live network traffic passes without dropping a single packet.
- Hospital & Healthcare Campus Networks – Edge switch redundancy – Prevents critical medical telemetry terminals from dropping offline during power rail faults.
- Industrial Manufacturing Control Racks – Process monitoring switch stacks – Keeps local PLC-to-HMI communications active during localized breaker trips.
- Higher Education & Enterprise IDCs – High-density stackable switch closets – Provides uninterrupted operational power across multi-switch stacks.
- Legacy Infrastructure Maintenance – Extend operational lifespans of SecureStack hardware environments without replacing working switches.

C2RPS-PSM
Transparency SOP: Quality Assurance & Testing
Network power supplies cannot be installed on hope. Every C2RPS-PSM module undergoes a multi-point verification protocol before entering our inventory:
- Visual & Mechanical Check: Inspecting faceplate thumbscrews, rear DC bus alignment pins, and internal fan blades for dust buildup or physical deformation.
- AC Input Conditioning: Powering the module via a variable AC source across 100V–240V ranges to test auto-switching circuits and thermal protection limits.
- Full 150W DC Load Test: Mated to a dynamic electronic load bank to pull continuous amperage on the 12V output rail, checking for voltage sag or excessive ripple noise.
- Chassis Handshake & LED Verification: Installed in a C2RPS chassis connected to an active SecureStack switch to confirm front panel LED indications (“AC OK” / “DC OK”) and console SNMP reporting.
- ESD-Safe Protective Packaging: Sealed in static-shielding bags and encased in high-density structural foam to absorb shipping impacts.
The Veteran’s Tech Trap Guide
- ⚠️ PoE vs. Non-PoE Distinction: The C2RPS-PSM provides system power (12V DC) to keep switch logic and standard Ethernet ports operating. If you require redundant Power over Ethernet (PoE) backup power (48V DC rail) for “P”-suffixed switches, you must use the specialized standalone C2RPS-POE supply instead.
- ❗ Never Force the Slot: When sliding the C2RPS-PSM into a C2RPS-CHAS2 or CHAS8 bay, align the card guides smoothly. If you feel hard resistance, stop—forcing the module can bend or snap the rear DC connector pins inside the chassis backplane.
- ⚠️ Airflow Obstruction: These modules pull front-to-back air across internal heatsinks. Do not block the faceplate ventilation slits; restricted airflow will trip internal thermal cutoffs under heavy system load.
- ❗ Secure Both Thumbscrews: Always hand-tighten both faceplate thumbscrews fully after seating the module. A loose grounding bond via the faceplate frame can cause grounding loops or intermittent DC bus disconnections during rack vibration.
Frequently Asked Questions (FAQ for Conversion)
Q: Is the Enterasys C2RPS-PSM hot-swappable?
A: Yes. You can insert or remove a C2RPS-PSM module from an active C2RPS chassis bay without interrupting power to connected switches, provided the remaining modules or primary switch power supplies can handle the load.
Q: Can I run a C2RPS-PSM module standalone without a chassis enclosure?
A: No. The C2RPS-PSM is a slide-in modular card designed specifically to fit into the C2RPS-CHAS2 (2-slot) or C2RPS-CHAS8 (8-slot) chassis frames, which provide the structural mounting and internal bus routing.
Q: What is the difference between Enterasys and Extreme Networks branding on this part?
A: Extreme Networks acquired Enterasys Networks in 2013. The C2RPS-PSM part number remains identical across both brands, and units with either logo are 100% hardware-compatible and functionally interchangeable.
Q: Are these units brand new or surplus?
A: Because this hardware series is discontinued by the manufacturer, available inventory consists of fully tested New Surplus or factory-reconditioned stock. Every unit is bench-tested under load before shipping.
Q: What warranty coverage comes with this power supply module?
A: All supplied C2RPS-PSM power supply modules are backed by a comprehensive 12-month operational replacement warranty.




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