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Choose by installation after the port count passes
If five ports are enough, compare shelf depth, mounting, power-brick placement, airflow, support documents, and return path. If five ports are not enough, stop comparing these models and move to eight ports.

TP-Link
TP-Link TL-SG105-M2 5-Port 2.5G Unmanaged Switch
A version-aware guide to the fanless TL-SG105-M2, covering its five 100M/1G/2.5G ports, 25Gbps switching capacity, 12.11W listed maximum draw, port budget, and unmanaged limits.
Best for: Five-port 2.5GbE expansion with detailed official documentation
Main caution: No VLAN configuration, port monitoring, link aggregation, or PoE

NETGEAR
NETGEAR MS305 5-Port 2.5G Unmanaged Switch
A compact-switch guide to MS305, with five 100M/1G/2.5G ports, fanless metal construction, 9.24W listed maximum draw, 9,720-byte jumbo frames, mounting kit, and warranty-region checks.
Best for: Compact under-desk or wall-mounted five-port 2.5GbE expansion
Main caution: No VLAN, link aggregation, per-port statistics, or PoE controls