Your search for "msn3700-cs" revealed the following:
NEW Nvidia Mellanox MSN3700-CS2RC 32x 100GB QSFP28 F-B Cumulus Linux Switch
SKU: NSN-9998
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Nvidia Mellanox MSN3700-CS2FC 32x 100GB QSFP28 B-F Cumulus Linux Switch
SKU: NSN-9999
Condition: New
Shipping: Overnight Options
Warranty: 365 days