Your search for "CVR-4SFP10G-QSFP" revealed the following:

Cisco CVR-4SFP10G-QSFP 4SQRA 4x 10GB SFP+ to QSFP Reverse Adapter

SKU: NSB-4177
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days

$ 133.99

$ 199.99

• 8 in stock
Call if you need more