You cannot add "Cisco Catalyst 9200L - Network Essentials - switch - L3 - Managed - 48 x 10/100/1000 (PoE+) + 4 x 10 Gigabit SFP+ - rack-mountable - PoE+" to the basket because the product is out of stock.
Cisco – Network stacking module (pack of 2) – for Catalyst 9200L