Your search for "NXA-PAC" revealed the following:
Cisco N9K-C9300-FAN2-B Back-to-Front Airflow (Port-Side Exhaust) Switch Fan
SKU: NSH-6126
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 72.99
• Only 2 remaining
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Cisco N3K-C3172PQ-XL 48x 10GB SFP+ 6x 40GB QSFP+ Back-to-Front Airflow Switch
SKU: NSH-3331
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 419.99
• Only 2 remaining
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NEW Cisco N3K-C3132Q-V 32x 40GB QSFP+ Front-to-Back Airflow Switch
SKU: NSN-8218
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 1,299.99
• Only 1 remaining
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Cisco N9K-C93180LC-EX 32x 50GB QSFP+ Front-to-Back Airflow Switch
SKU: NSB-6914
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 375.99
• Only 2 remaining
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Cisco N3K-C3232C 32x 100GB QSFP28 2x 10GB SFP+ Front-to-Back Airflow Switch
SKU: NSB-7021
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 317.99
• Only 2 remaining
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Cisco N3K-C3172PQ-10GE 48x 10GB SFP+ 6x 40GB QSFP+ Front-to-Back Airflow Switch
SKU: NSB-6970
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 238.99
• Only 2 remaining
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NEW Cisco N3K-C31108PC-V 48x 10GB SFP+ 6x 100GB QSFP28 Front-to-Back Air Switch
SKU: NSN-8195
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 629.99
• 13 in stock
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Cisco N3K-C3636C-R 36x 100GB QSFP28 Back-to-Front Airflow Switch
SKU: NSH-8374
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 4,382.99
• Only 2 remaining
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NEW Cisco N9K-C9300-FAN2-B Back-to-Front Airflow (Port-Side Exhaust) Switch Fan
SKU: NSN-7759
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 88.99
• 5 in stock
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Cisco N3K-C3172PQ-10GE 48x 10GB SFP+ 6x 40GB QSFP+ Back-to-Front Airflow Switch
SKU: NSH-4685
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 238.99
• Only 2 remaining
Call if you need more