Cisco Linksys 5V Power Adapter for SPA500 and SPA900 (PA100-NA) | Recertified-1
Cisco Linksys 5V Power Adapter for SPA500 and SPA900 (PA100-NA) | Recertified-1
Cisco

Cisco Linksys 5V Power Adapter for SPA500 and SPA900 (PA100-NA) | Recertified

SKU: PA100-NA
Condition: Recertified
Recertified

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$14.99
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The Cisco Linksys 5V Power Adapter for SPA500 and SPA900 (PA100-NA) is a reliable AC power supply designed to deliver local power to IP phones in the Cisco SPA500 and SPA900 series in the absence of PoE. It is a useful replacement adapter for office, home office and small company phone deployments since it offers the steady 5V DC output required for regular VoIP operation. This PA100-NA power adapter, designed for Cisco and Linksys SPA VoIP devices, is frequently used with phones including the SPA501G, SPA502G, SPA504G, SPA508G, SPA509G, SPA512G, SPA514G, SPA525G, SPA525G2, SPA921, SPA922, SPA941 and SPA942. It is a reliable option for supplementing or recovering phone power in non-PoE scenarios thanks to its small black design and universal input capabilities.

Quick specs

Product Type
Power Adapter
Color
Black
Device Supported
IP phones
Compatible Series
Cisco SPA500 series, Cisco/Linksys SPA900 series
Output Voltage
5V DC
Output Current
2A

Key Features

  • 5V DC output for compatible Cisco SPA500 and SPA900 IP phones.

  • 2A current output for stable local phone power.

  • Universal input voltage range of 100–240V AC, 50/60Hz.

  • Designed for use when Power over Ethernet is unavailable.

  • Compatible with Cisco SPA501G, SPA502G, SPA504G, SPA508G, SPA509G, SPA512G, SPA514G, SPA525G, SPA525G2.

  • Compatible with Cisco/Linksys SPA921, SPA922, SPA941, SPA942.

  • North American power plug for standard outlet use.

  • Direct DC input connection to supported phone models.

  • OEM-compatible replacement for Cisco PA100-NA.

  • Suitable for desktop VoIP installations and replacement scenarios.

Benefits

  • Keeps Cisco SPA500 and SPA900 phones running in environments where PoE is not available, reducing installation limitations.
  • Restores service quickly when the original power adapter is lost, damaged, or no longer working.
  • Supports a wide range of Cisco SPA phones, making it useful for mixed legacy VoIP deployments.
  • Provides stable 5V/2A power for reliable phone operation and daily business communications.
  • Simplifies procurement with a single adapter class that fits multiple SPA-series phone models.
  • Helps IT teams support offices with non-PoE switches or remote desk setups.
  • Uses a universal AC input, making it suitable for broad deployment across common power environments.
  • Offers a cost-effective replacement choice for maintaining older Cisco Linksys VoIP hardware.
Manufacturer Cisco
Manufacturer Part Number PA100-NA
Product Name Cisco Linksys 5V Power Adapter for SPA500 and SPA900
Product Type Power Adapter
Color Black
Device Supported IP phones
Compatible Series Cisco SPA500 series, Cisco/Linksys SPA900 series
Compatible Models SPA501G, SPA502G, SPA504G, SPA508G, SPA509G, SPA512G, SPA514G, SPA525G, SPA525G2, SPA921, SPA922, SPA941, SPA942
Output Voltage 5V DC
Output Current 2A
Output Power 10W
Output Polarity Center positive
Input Voltage 100V AC to 240V AC
Input Frequency 50/60Hz
Input Current 0.3A to 0.6A, depending on source listing
Plug Type North American plug / NEMA 1-15P
Power Source AC wall outlet
Connection Type DC barrel plug to phone
Use Case Local power for SPA phones when PoE is unavailable
Form Factor External power adapter
Application Desk phone power supply

Frequently Asked Questions

Cisco Linksys 5V Power Adapter for SPA500 and SPA900 (PA100-NA) | Recertified

What output does the Cisco PA100-NA provide?
The PA100-NA commonly provides 5V DC at up to 2A, giving it a maximum rated output of 10 watts. The connected device must be designed for the same voltage, connector and polarity.
What AC input voltage does the adapter support?
The adapter is commonly specified for universal 100–240V AC input at 50/60Hz. Always verify the electrical label on the individual adapter before use.
What does the NA designation mean?
NA identifies the North American version, supplied with a plug intended for compatible electrical outlets in the United States and Canada.
Is the PA100-NA compatible with Cisco SPA500 phones?
Yes. It is the optional external power supply specified for supported SPA500 Series phones when PoE is not used.
Can it power a Cisco SPA504G?
Yes. Cisco lists the PA100 as the optional 5V DC supply for the SPA504G. The phone can alternatively receive power through supported IEEE 802.3af PoE.
Does it work with the Cisco SPA501G?
Yes. Cisco documentation identifies the PA100 as the optional external power supply for the SPA501G.
Is it compatible with the SPA502G?
Yes. The SPA502G supports an optional 5V DC universal power supply ordered separately as the Cisco PA100.
Can it power the SPA508G or SPA509G?
These models are commonly listed as compatible with the PA100-NA. Confirm the exact phone revision and DC-input markings before installation.
Does it support the SPA512G and SPA514G?
Yes, these SPA500 Series models are commonly associated with PA100 local-power support. Compatibility should still be checked against the phone’s product label and documentation.
Can it be used with the SPA525G or SPA525G2?
Yes. Both models are commonly listed as compatible with the PA100-NA external power supply.
Is the adapter compatible with Linksys SPA900 Series phones?
It supports select legacy SPA900-family phones, commonly including the SPA941, SPA942, and SPA962. Compatibility can vary by hardware revision.
Does the phone still need an Ethernet connection?
Yes. The PA100-NA supplies electrical power only. The phone still requires a network connection and properly configured VoIP service to place or receive calls.
Is the adapter needed when the phone uses PoE?
Usually not. A compatible phone receiving sufficient IEEE 802.3af PoE through its Ethernet connection generally does not require a separate PA100 adapter.
Can the PA100-NA replace a PoE injector?
It can provide local power instead of a PoE injector, but it does not add power to the Ethernet cable. The phone still connects separately to the network.
Is this a phone battery charger?
No. Cisco SPA desk phones do not normally operate from a rechargeable internal battery. The PA100-NA directly powers the phone while connected.
Can a 12V adapter be used instead?
No. A 12V adapter should never be connected to a phone designed for 5V input. Excess voltage can permanently damage the phone and create a safety hazard.
Can another 5V 2A adapter be substituted?
Only when its output voltage, connector dimensions, center polarity, regulation, quality, and safety certifications match the phone’s requirements. Using the Cisco-specified adapter is the safest option.
Can the adapter be used outside North America?
Its universal input range may accept local voltage in many countries, but the attached plug is designed for North American outlets. An approved plug adapter may be required, and local electrical regulations must be followed.
How can compatibility be confirmed?
Check the model number on the underside of the phone and inspect its DC-input label. Confirm 5V input, connector size, polarity, and PA100 support in the phone’s documentation.
When should the power adapter be replaced?
Replace the adapter if its housing is cracked, the cable is cut or frayed, the barrel connector is loose, power becomes intermittent, or the unit develops excessive heat, buzzing, discoloration, smoke, or an unusual odor.
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Cisco Linksys 5V Power Adapter for SPA500 and SPA900 (PA100-NA) | Recertified

Cisco Linksys 5V Power Adapter for SPA500 and SPA900 (PA100-NA) | Recertified

Cisco

$14.99