Your search for "Dell Stacking Cable" revealed the following:

Intel XDACBL1M 1m 10GB SFP+ Passive Direct Attach Copper Cable

SKU: NSB-7070
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days

NEW Dell 407-BBZV 10GB BASE-LR 1310nm SMF JCFJD SFP+ Transceiver

SKU: NSN-8411
Condition: New
Shipping: Overnight Options
Warranty: 365 days

Cisco C9300-24UB-E Catalyst 9300 24x 1GB UPoE RJ45 1x Exp Module Slot Switch

SKU: NSB-7145
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days