Cisco Meraki 640W Power Supply for Switches

The Cisco MA-PWR-640WAC is a 640 watt power supply designed exclusively for Cisco Meraki MS250 and MS350 series switches. It provides the steady, dependable power that keeps core and edge networks running, whether the switch is driving access points, IP phones, or other connected devices.

Network administrators often drop this unit into a new switch as the primary source of power, but it is just as valuable as a redundant supply that takes over automatically if the first unit fails. In environments such as branch offices, campus buildings, or retail locations where downtime is not an option, that failover capability helps safeguard service continuity.

Because the power supply is hot-swappable and field-replaceable, a technician can slide out a failed unit and insert a new one without powering down the switch or interrupting live traffic. The straightforward, tool-less installation makes on-site replacement quick, saving time during maintenance windows and reducing the need for specialized support.

Every component is built to Cisco’s durability standards, so you can count on consistent performance day after day. For teams that rely on the Meraki cloud dashboard to monitor their networks, pairing the switch with an original Cisco power supply keeps the hardware fully supported and within warranty guidelines.

• 640 watt output tailored for Cisco Meraki switches
• Compatible with Cisco Meraki MS250 and MS350 series
• Hot-swappable design allows replacement without shutting down the switch
• Field-replaceable for quick on-site service
• Ideal for primary use or as a redundant failover power source
• Simple, tool-less installation streamlines deployment
• Original Cisco part number MA-PWR-640WAC for assured fit and support