The accessories required depend on the exact switch model and network design. Common requirements include uplink modules, stacking cables, power supplies, SFP or SFP+ optics, DAC or AOC cables and rack accessories. Cisco Catalyst 9200L and 9300L models have fixed uplinks, while modular Catalyst 9200, 9300 and 9300X models may require a compatible network module. Always check the full switch SKU before ordering accessories.