Cisco C9300LM-48UX-4Y-A | Catalyst 9300L Mini 48-Port Switch, 8x 10G mGig, 790W UPOE, 4x 25G SFP28

Q: What is the difference between the standard 1G ports and the multigigabit ports on this switch?
A: The C9300LM-48UX-4Y-A has 40 standard 1G copper ports and 8 multigigabit ports that auto-negotiate from 100M up to 10G (supporting 1G/2.5G/5G/10G speeds). The multigigabit ports are ideal for connecting Wi-Fi 6/6E access points, high-performance endpoints, or 10G uplinks over existing Cat5e/6 cabling.

Q: Does this switch require a DNA or software license to operate?
A: Yes, the C9300LM-48UX-4Y-A includes the Network Advantage license tier and requires an active Cisco DNA subscription (3, 5, or 7 years) for full feature support, including SD-Access, advanced security, analytics, and automation capabilities. The switch will not function without a valid license.

Q: What is the maximum PoE budget available on this switch?
A: With the default 1000W AC power supply (PWR-C6-1KWAC), the switch delivers 790W of PoE budget. By adding a second power supply in the redundant slot, the total PoE budget can be expanded to 1,790W, supporting high-density UPOE deployments requiring up to 60W per port.

Q: Can this switch be stacked with other Catalyst 9300 models?
A: Yes, the C9300LM-48UX-4Y-A supports StackWise-320 technology and can stack with other C9300L and C9300LM models using dedicated stacking cables. Up to 8 switches can be stacked for 320 Gbps stacking bandwidth, single management plane, and high availability with NSF/SSO.

Q: What are the key use cases for this switch?
A: This compact switch is ideal for high-density enterprise access deployments in campus buildings, branch offices, or wiring closets requiring UPOE for IP phones, cameras, and Wi-Fi 6E access points. The 8 multigigabit ports and 4 x 25G uplinks make it suitable for hybrid deployments with mixed 1G/10G endpoints and high-speed fiber aggregation.