Your search for "cbs250-48p-" revealed the following:
Cisco CBS250-48P-4X-NA 48x 1GB PoE+ RJ45 4x 10GB SFP+ Switch
SKU: NSB-7378
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 551.99
• Only 2 remaining
Call if you need more
NEW Cisco CBS250-48P-4X-NA 48x 1GB PoE+ RJ45 4x 10GB SFP+ Switch
SKU: NSN-0303
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Cisco CBS250-48P-4G-NA Business 250 Smart 48x 1GB PoE+ RJ45 4x 1GB SFP Switch
SKU: NSB-7373
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Cisco CBS250-48PP-4G-NA Business 250 Smart 48x 1GB PoE+ RJ45 4x 1GB SFP Switch
SKU: NSB-7372
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Cisco CBS250-48PP-4G-NA Business 250 Smart 48x 1GB PoE+ RJ-45 4x SFP Switch
SKU: NSN-0301
Condition: New
Shipping: Overnight Options
Warranty: 365 days