Your search for "NXA-PAC" revealed the following:
NEW Cisco N9K-X9636C-R Nexus 9500R Series 36x 100GB QSFP28 Switch Line Card
SKU: NSN-8304
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Cisco N9K-C9508-FM-R Nexus 9508 Switch Fabric Module
SKU: NSN-3804
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Cisco N9K-X9564TX 48x 10GB Copper 4x 40GB QSFP+ Switch Line Card
SKU: NSN-2539
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Cisco N9K-C9372TX-E 48x 10GB Copper 6x 40GB QSFP+ Front-to-Back Air Switch
SKU: NSN-8192
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Cisco N9K-C9332PQ Nexus 9300 32x 40GB QSFP+ Back-to-Front Airflow Switch
SKU: NSN-2560
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Cisco N9K-C9508-FM-E2 Nexus 9500 8x Slot 800Gbps Cloud-Scale Fabric Module
SKU: NSN-0719
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Cisco N9K-C9516-FM-E Nexus 9500 800Gbps Cloud Scale Fabric Switch Module
SKU: NSN-2052
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Cisco N9K-X9536PQ Nexus 9000 Series 36x 40GB QSFP+ Switch Line Card
SKU: NSN-8788
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Cisco N9K-X9636C-RX 36x 100GB QSFP28 Switch Line Card w/ Additional TCAM
SKU: NSB-7707
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Cisco N9K-X9636PQ 36x 40GB QSFP+ Switch Line Card
SKU: NSN-7503
Condition: New
Shipping: Overnight Options
Warranty: 365 days