Get the genuine Cisco CP-3905-PWR-NA power adapter — the official AC power supply for the Cisco Unified SIP Phone 3905. Ideal for offices, home workspaces, and enterprise deployments where Power over Ethernet (PoE) is not available. Backed by Reef Telecom's industry-leading warranty and fast shipping.

Key Features

• Genuine Cisco Accessory: OEM power adapter (Part # CP-3905-PWR-NA) ensures full compatibility and reliable performance
• Output: 4.2V DC, 1.5A — engineered specifically for the Cisco 3905 SIP phone
• North American Standard: Designed for standard NA wall outlets (100–240V AC input)
• Compact Form Factor: Space-saving design ideal for desk and wall-mount phone installations
• Plug-and-Play Setup: No configuration required — connect and power your Cisco 3905 instantly
• Warranty: Covered by Reef Telecom's 10-year warranty for peace of mind

Specifications

• Part Number: CP-3905-PWR-NA (UPC: 882658429842)
• Product Type: AC Power Adapter
• Output Voltage: 4.2V DC
• Output Current: 1.5A
• Input Voltage: 100–240V AC
• Localization: North America
• Condition: New

Compatibility

This power supply is designed exclusively for the Cisco Unified SIP Phone 3905 (CP-3905, CP-3905-K9). It provides a dedicated power source for deployments without PoE-enabled switches — perfect for small offices, remote workers, and distributed enterprise environments.

Free ground shipping on orders over $300. Same-day shipping on orders placed before 4PM EST.

All products include our industry-leading 10 Year Warranty backed by Reef Telecom.