Your search for "n3k-c3064" revealed the following:
Cisco N3K-C3064-X-BD-L3 48x 10GB SFP+ 4x 40GB QSFP+ Front-to-Back Air DC Switch
SKU: NSB-6937
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Cisco N3K-C3064-X-FD-L3 48x 10GB SFP+ 4x 40GB QSFP+ Back-to-Front Air DC Switch
SKU: NSB-6936
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Cisco N3K-C3064-X-BA-L3 48x 10GB SFP+ 4x 40GB QSFP+ Front-to-Back Airflow Switch
SKU: NSB-6935
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Cisco N3K-C3064-X-FA-L3 48x 10GB SFP+ 4x 40GB QSFP+ Back-to-Front Air Switch
SKU: NSN-2639
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Cisco N3K-C3064-X-FD-L3 48x 10GB SFP+ 4x QSFP+ B-F Air DC Switch
SKU: NSN-3830
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Cisco N3K-C3064TQ-10GT 48x 10GB Copper 4x 40GB QSFP+ F-B Airflow Switch
SKU: NSN-7221
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Cisco N3K-C3064PQ-10GX 48x 10GB SFP+ 4x 40GB QSFP+ Front-to-Back Air Switch
SKU: NSN-7298
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Cisco N3K-C3064TQ-10GT 48x 10GB Copper 4x 40GB QSFP+ B-F Airflow Switch
SKU: NSN-2171
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Cisco N3K-C3064PQ-10GE 48x 10GB SFP+ 4x 40GB QSFP+ Back-to-Front Air Switch
SKU: NSN-2088
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Cisco N3K-C3064PQ-10GX 48x 10GB SFP+ 4x 40GB QSFP+ Back-to-Front Air Switch
SKU: NSN-1820
Condition: New
Shipping: Overnight Options
Warranty: 365 days