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 StackWise 480 – Stacking cable – 50 cm – for Catalyst 3850-24, 3850-48