Product identity

Manufacturer SKU, MPN, and model information

Use the manufacturer’s SKU, MPN, model identifier, or configuration code to match the exact equipment and variant.

Cisco Meraki MS355 Series

Manufacturer identifier
MS355-24X
Variant
Cisco Meraki MS355 Series
Region
U.S. procurement scope; verify orderability
Verified
Official product page

Its mixed access layout is the key buying distinction

MS355-24X supplies eight copper ports supporting speeds through 10Gb and 16 ordinary Gigabit ports. MS355-24X2 is a different configuration, with 24 multi-gigabit access ports. The suffix can therefore determine whether the proposed wireless or workstation rollout fits without moving equipment between switches.

A mixed population is where 24X makes sense. Assign the faster interfaces to devices that can use them, and reserve room for the expected next additions. If the project already needs more than eight such connections, the presence of 24 copper sockets does not provide growth capacity. It creates an immediate port-allocation constraint that should appear in the review and the quote.

Faster access needs both cable and power suitability

The model's published power budget is 740W, with UPoE capability. Port speed and power delivery are separate requirements: an endpoint may negotiate the desired data rate while entering a restricted operating mode because its power needs are not met.

Cartennas would review the actual powered-device population and verify full operating mode after deployment. For access points, that includes the intended radios and accessories; for other equipment, the relevant load state. Existing cable runs also deserve qualification for the selected rate. A cable that carried Gigabit reliably is useful evidence about its condition, but not proof that every faster mode will be equally stable.

The uplink and stack resources are unusually distinct

The selected switch provides four 10Gb-capable SFP+ uplinks and two 40Gb QSFP+ links in addition to dedicated stack connections. Its stack bandwidth is specified as 400Gb aggregate. That gives a mixed-speed edge several ways to avoid pushing all traffic through one small upstream path.

The choice still follows the traffic. Eight fully utilized 10Gb endpoints can generate 80Gb/s in one direction before the Gigabit population is considered. A pair of 10Gb uplinks may be reasonable for bursty office demand but insufficient for sustained upstream transfers from that group. Local switching, oversubscription and failure-state capacity should be deliberate decisions rather than assumptions hidden behind the aggregate fabric rating.

Positive field reports should be kept in context

One operator reported a substantially quieter support period after replacing problematic MS390 equipment with MS355 switches. That is useful firsthand evidence about that deployment and its software era. It is not proof that every MS355 is more reliable than every current software configuration on another platform.

For a working MS355 estate, the report supports measured retention and careful migration. Preserve the behavior that is already understood, while testing the replacement's power negotiation, multicast, authentication and upgrade process. Buying a familiar replacement solely on a favorable old anecdote would ignore the support timeline and the functions now available on current hardware.

The supported stack boundary matters during a phased refresh

MS355 is separate from MS350 for physical stacking. A migration cannot assume the similarly named families will join one mixed hardware stack. Plan the interconnection as a network link or move a complete supported group, with an explicit gateway and loop-prevention design.

MS355-24X sales ended August 8, 2025, and support ends August 8, 2030. Its strongest role now is continuing a known installation whose eight faster access ports remain sufficient. For new long-term investment, a current platform should satisfy the full endpoint population without requiring another early migration.

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Cartennas assessment

Retain MS355-24X for an established mixed-speed edge where eight fast ports and the supported power design fit. Select a current platform for new long-term growth, and keep the MS350/MS355 stacking boundary explicit during migration.

Cartennas analysis of manufacturer specifications, applicable technical documentation and available firsthand operating evidence. Review methodology. Cartennas provides product procurement and onsite services. Product review terms.

Official manufacturer information

Confirm the exact model, specifications, licensing, warranty, and support terms directly with the manufacturer.

Product information was checked on September 5, 2026. Specifications, licensing, warranty, availability, and pricing can change.