Your search for "N5K-C5648Q" revealed the following:

NEW Cisco N5K-C5648Q 24x 40GB QSFP+ 2x GEM Slot Back-to-Front Air Switch Chassis

SKU: NSN-0337
Condition: New
Shipping: Overnight Options
Warranty: 365 days

NEW Cisco N5K-C5648Q 24x 40GB QSFP+ 2x GEM Slot Front-to-Back Air Switch Chassis

SKU: NSN-3539
Condition: New
Shipping: Overnight Options
Warranty: 365 days

Cisco N5K-C5648Q 24x 40GB QSFP+ 2x GEM Slot Back-to-Front Air Switch Chassis

SKU: NSB-7103
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days

Cisco N5K-C5648Q 24x 40GB QSFP+ 2x GEM Slot Front-to-Back Air Switch Chassis

SKU: NSH-7707
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days