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 Business 350 Series 350-48T-4X – Switch – L3 – Managed – 48 x 10/100/1000 + 4 x 10 Gigabit SFP+ – rack-mountable