Your search for "CBS350-16T" revealed the following:
Cisco CBS350-16T-2G-NA Business 350 16x 1GB RJ45 2x 1GB SFP Switch
SKU: NSB-7796
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Cisco CBS350-16T-E-2G-NA Business 350 16x 1GB RJ45 2x 1GBSFP Switch
SKU: NSB-7798
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days