Your search for "dcs-7800r3-48cqm-lc" revealed the following:

Arista DCS-7800R3-48CQM-LC 48x 100GB QSFP28 w/ MACsec Router Line Card

SKU: NSB-0973
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days

NEW Arista DCS-7800R3-48CQ-LC 7800R3 48x 100 Gigabit QSFP Switch Line Card

SKU: NSN-3716
Condition: New
Shipping: Overnight Options
Warranty: 365 days

Arista DCS-7800R3-48CQ-LC 7800R3 48x 100 Gigabit QSFP Switch Line Card

SKU: NSH-9596
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days