You cannot add "Cisco Catalyst 9300 - Network Advantage - switch - L3 - Managed - 24 x 10/100/1000 (PoE+) - rack-mountable - PoE+ (445 W)" to the basket because the product is out of stock.
Cisco Catalyst 9300L Series 24-Port Ethernet Switch C9300L-24T-4G-E with 4G Network Module