Your search for "CBS250-48T" revealed the following:

Cisco CBS250-48T-4X-NA 250 Smart Series 48x 1GB RJ45 4x 10GB SFP+ Switch

SKU: NSB-7377
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days

$ 189.99

$ 263.99

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NEW Cisco CBS250-48T-4X-NA 250 Smart Series 48x 1GB RJ-45 4x 10GB SFP+ Switch

SKU: NSN-0429
Condition: New
Shipping: Overnight Options
Warranty: 365 days

Cisco CBS250-48T-4G-NA Business 250 Smart 48x 1GB RJ45 4x 1GB SFP Switch

SKU: NSB-7371
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days