Your search for "cbs350-12xs" revealed the following:
Cisco CBS350-12XS-NA Business 350 12x 10GB SFP+ 2x 10GB Combo Switch
SKU: NSB-7819
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Cisco CBS350-12XT-NA 12x 10GB Copper 2x 10GB SFP+ Switch
SKU: NSB-7823
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Cisco CBS350-24XTS-NA Business 350 Series 12x 10GB Copper 12x 10GB SFP+ Switch
SKU: NSB-7821
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Cisco CBS350-12NP-4X-NA 12x MultiGB PoE+ RJ45 4x 10GB Switch
SKU: NSB-7817
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days