Your search for "MSN3700-VS" revealed the following:
Mellanox MSN3700-VS2FO 32x 200GB QSFP56 Back-to-Front Airflow (P2C) ONIE Switch
SKU: NSB-6723
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW nVidia Mellanox MSN3700-CS2R 32x 100GB QSFP28 F-B Airflow (C2P) Onyx Switch
SKU: NSN-9639
Condition: New
Shipping: Overnight Options
Warranty: 365 days
nVidia Mellanox MSN3700-CS2R 32x 100GB QSFP28 F-B Airflow (C2P) Onyx Switch
SKU: NSB-6726
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days