PWR‑2921‑51‑AC Specifications
Cisco AC Power Supply for ISR 2921/2951 Series Routers
Manufacturer: Cisco
Manufacturer Model: PWR‑2921‑51‑AC
Product Line: Cisco ISR 2900 Series Power Supplies
Product Series: AC Power Supply Module
Product Type: Internal AC Power Supply Unit
Product Name: Cisco PWR‑2921‑51‑AC AC Power Supply
KEY FEATURES:
Output Power: ~250‑290 W AC
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Input Voltage: 100‑240 V AC auto‑ranging
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Input Frequency: 50‑60 Hz
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Hot‑Swap Support: Yes (internal PSU module)
Compatibility: Designed for Cisco ISR 2921 and 2951 routers
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PERFORMANCE:
Supports full operation of ISR 2921/2951 with standard modules and services—ensures reliable power delivery in branch‑office or enterprise service‑router environments.
ENVIRONMENTAL & RELIABILITY:
Designed for continuous 24×7 operation in network‑infrastructure settings.
End‑of‑Sale Notice: This product has been announced End‑of‑Sale and no direct replacement is currently listed.
Cisco
PHYSICAL:
Form Factor: Internal PSU module, fits Cisco ISR 2900 series chassis
Typical Dimensions: Approx. 10.5 × 8.2 × 2.5 inches (26.7 × 20.8 × 6.4 cm)
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Weight: ~3.2 lbs (approx. 1.45 kg)

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