Dimensions of a 48-port PoE switch

A standard 48-port rackmount switch typically measures 1.75 inches (1U) in height, 17.3 inches (44 cm) in width, and 10–12 inches (25–30 cm) in depth.

Typical Physical Dimensions

• Height: 1.75 inches (1U) for most rackmount models, including Cisco Catalyst 4948 and TP-Link TL-SG1048 .
• Width: Approximately 17.3 inches (44 cm), which fits standard 19-inch server racks .
• Depth: Varies by model, generally between 10 inches (25 cm) and 12 inches (30 cm) for compact switches; larger enterprise models may extend deeper to accommodate power supplies and cooling .

Model-Specific Notes

• Cisco Catalyst 9200 Series: Offers 48 PoE+ ports with optional fan redundancy; depth may vary depending on power supply configuration .
• UniFi US-48: Fully managed 48-port switch with two SFP+ uplinks; designed for standard 1U rackmount installation .
• TP-Link TL-SG1048: Unmanaged 48-port Gigabit switch; compact design suitable for desktops or 1U rackmounts .

Additional Considerations

• Rack Units (RU): Most 48-port switches are 1U, but some high-performance or PoE-heavy models may be 1.5U or 2U.
• Depth for Cabling: Ensure sufficient rear clearance for Ethernet cables, especially for PoE switches, which may require additional airflow.
• Fanless vs. Fan-Cooled: Fanless models (e.g., some UniFi and Cisco C9200CX variants) are shallower and quieter, while fan-cooled models may be slightly deeper to accommodate airflow . These dimensions allow network administrators to plan rack space, airflow, and cable management effectively when deploying a 48-port switch.