Cisco C9300-48UN-A — Catalyst 9300 48-Port 5G Multigigabit UPOE Switch with Modular Uplinks and Network Advantage
What it is
C9300-48UN-A is a Cisco Catalyst 9300 Series enterprise access switch designed for campus networks that need 48 multigigabit copper ports, high-power PoE, modular uplinks, and advanced Layer 3 capabilities.
It provides 48 × multigigabit RJ-45 UPOE ports supporting 100M / 1G / 2.5G / 5G, plus a modular uplink slot. The “-A” version includes the Network Advantage software tier.
Why buyers pick C9300-48UN-A (plain English)
48 multigigabit ports: Every access port can run at up to 5Gbps, making it a strong fit for modern wireless APs and other devices that need more than standard 1GbE.
Cisco UPOE support: Provides more power than standard PoE+, making it suitable for higher-power APs, cameras, displays, collaboration devices, and other demanding endpoints.
610W PoE budget with standard PSU: With the standard 1100W AC power supply, the switch provides up to 610W of available PoE power.
Modular uplinks: The uplink module is selected separately, so you can choose the 1G, 10G, 25G, or 40G connectivity that best fits your design.
Network Advantage licensing: Provides broader Layer 3 routing, segmentation, resiliency, and enterprise features than Network Essentials.
60-second spec box (C9300-48UN-A)
Access / downlink ports
- 48 × RJ-45 multigigabit ports
- Supported speeds:
- 100 Mbps
- 1 Gbps
- 2.5 Gbps
- 5 Gbps
- Cisco UPOE
PoE
- IEEE 802.3af PoE
- IEEE 802.3at PoE+
- Cisco UPOE
-
610W PoE budget with standard 1100W AC PSU
- Total PoE capacity can vary with power-supply configuration
Uplinks
- Modular uplink slot
- Uplink network module selected separately
- Supports compatible Catalyst 9300 network modules
- Options available for high-speed fiber connectivity
Stacking
- Cisco StackWise-480
- Up to 480 Gbps stack bandwidth
- Multi-switch stacking support
-
StackPower support
Switching / routing
- Managed Layer 2 and Layer 3
- VLANs
- QoS
- STP / RSTP / MSTP
- EtherChannel / LACP
- IPv4 / IPv6
- OSPF
- EIGRP
- BGP
- HSRP
- IS-IS
- VRF
- Multicast
- Policy-based routing
- ACLs
Software
- Cisco IOS XE
- Network Advantage
- SKU suffix: -A
Management
- Cisco CLI
- SSH
- SNMP
- NETCONF / RESTCONF
- YANG
- Cisco Catalyst Center integration
- Model-driven telemetry
Power
- 1100W AC power supply installed by default
- Dual power-supply slots
- Redundant PSU support
- Designed for multigigabit UPOE deployments
Physical
- 1U rack-mount switch
- Catalyst 9300 enterprise chassis
- Modular power and uplink architecture
Where it fits (and when to choose something else)
Perfect for:
- Wi-Fi 6 access point deployments
- High-density enterprise campus access
- Devices requiring 2.5G or 5G
- UPOE-powered endpoints
- PTZ cameras
- Collaboration systems
- Smart-building devices
- Networks requiring advanced Layer 3 features
Choose something else if:
- You only need Network Essentials → choose C9300-48UN-E
- You need 10G multigigabit access ports → choose C9300-48UXM-A or a Catalyst 9300X model
- You only need standard 1G UPOE → consider C9300-48U-A
- You only need PoE+ → consider C9300-48P-A
- You do not need PoE → choose a data-only Catalyst 9300 model
TL;DR
C9300-48UN-A is a Cisco Catalyst 9300 enterprise switch with 48 × multigigabit UPOE RJ-45 ports supporting up to 5Gbps, a 610W PoE budget with the standard 1100W PSU, modular uplinks, StackWise-480, StackPower, Cisco IOS XE, and Network Advantage licensing — ideal for high-density wireless and multigigabit enterprise access networks.
