Your search for "CBS220-48T" revealed the following:
Cisco CBS220-48T-4X-NA Business 220 Series 48x 1GB RJ45 4x 10GB SFP+ Switch
SKU: NSB-7753
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Cisco CBS220-48T-4G-NA Business 220 Series 48x 1GB RJ45 4x 1GB SFP Switch
SKU: NSN-0554
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Cisco CBS220-48T-4X-NA Business 220 Series 48x 1GB RJ45 4x 10GB SFP+ Switch
SKU: NSN-0612
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Cisco CBS220-48T-4G-NA Business 220 Series 48x 1GB RJ45 4x 1GB SFP Switch
SKU: NSB-5734
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days