Your search for "Dell S3048" revealed the following:
Dell S4148T-ON-RA 48x 10GB Copper 2x 40GB QSFP+ 4x QSFP28 B-F No OS10 Switch
SKU: NSB-9789
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Dell S4148F-ON-RA 210-ALSR 48x SFP+ 4x QSFP28 2x QSFP+ B-F Air OS10 Switch
SKU: NSN-8123
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Dell S4148FE-ON 48x 10GB SFP+ 2x 40GB QSFP+ 4x 100GB QSFP28 F-B No OS10 Switch
SKU: NSB-9790
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Dell S5248F-ON 48x 25GB SFP28 2x QSFP28-DD 4x QSFP28 F-B No OS10 Switch
SKU: NSN-9940
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Dell S5148F-ON-RA 210-ANCL 48x 25GB SFP28 6x 100GB QSFP28 B-F Air OS10 Switch
SKU: NSB-9771
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Dell S4148T-ON-RA 48x 10GB Copper 2x 40GB QSFP+ 4x QSFP28 B-F No OS10 Switch
SKU: NSN-9965
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Dell S4148T-ON-RA 48x 10GB Copper 2x 40GB QSFP+ 4x 100GB QSFP28 B-F OS10 Switch
SKU: NSB-6544
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Dell S5148F-ON-RA 210-ANCL 48x 25GB SFP28 6x 100GB QSFP28 B-F No OS10 Switch
SKU: NSN-8132
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Dell S5148F-ON-RA 210-ANCL 48x 25GB SFP28 6x 100GB QSFP28 B-F Air No OS10 Switch
SKU: NSB-6551
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Dell S5248F-ON 48x 25GB SFP28 2x 200GB QSFP28-DD 4x 100GB QSFP28 F-B Switch
SKU: NSN-1910
Condition: New
Shipping: Overnight Options
Warranty: 365 days