You cannot add "Cisco - QSFP+ transceiver module - 40 Gigabit LAN, 100 Gigabit Ethernet - 40GBASE-BiDi, 100GBASE-BiDi - LC multi-mode - up to 100 m - for Mellanox ConnectX-5 Ex EN" to the basket because the product is out of stock.
Cisco Business 220 Series CBS220-24T-4G – Switch – smart – 24 x 10/100/1000 + 4 x Gigabit SFP (uplink) – rack-mountable