Your search for "VSP4900" revealed the following:
Extreme VSP4900-12MXU-12XE 12x 5GB PoE RJ45 12x 10GB SFP+ Switch
SKU: NSB-9044
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 2,869.99
• Only 2 remaining
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Extreme VIM5-2Y VSP 4900 Series 2x 25GB SFP28 Switch Module
SKU: NSH-9354
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 239.99
• 5 in stock
Call if you need more
NEW Extreme VIM5-2Y VSP 4900 Series 2x 25GB SFP28 Switch Module
SKU: NSN-4133
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 369.99
• 24 in stock
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Extreme VIM5-4X VSP 4900 Series 4x 10GB SFP+ Switch Module
SKU: NSB-4650
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 244.99
• Only 1 remaining
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NEW Extreme Networks 10941 VSP 4900 Series 1100W Switch Power Supply
SKU: NSN-4904
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 374.99
• Only 2 remaining
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Extreme 10951 VSP 4900 Series 715W AC Front-to-Back Airflow Switch Power Supply
SKU: NSH-9352
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 74.95
• 4 in stock
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NEW Extreme 10951 VSP 4900 Series 715W AC Switch Power Supply
SKU: NSN-4373
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 224.99
• Only 2 remaining
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Extreme Networks 10941 1100W AC Front-to-Back Airflow Switch Power Supply
SKU: NSH-9351
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 77.99
• Only 2 remaining
Call if you need more
Extreme VSP4900-48P 48x 1GB PoE 4x 10GB SFP+ 2x 25GB SFP28 1x 40GB QSFP+ Switch
SKU: NSB-4649
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Extreme VIM5-4X VSP 4900 Series 4x 10GB SFP+ Switch Module
SKU: NSN-4586
Condition: New
Shipping: Overnight Options
Warranty: 365 days