Your search for "dell s4148" revealed the following:

Dell S4148T-ON 48x 10GB Copper 2x 40GB QSFP+ 4x 100GB QSFP28 F-B OS10 Switch

SKU: NSH-9212
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days

Dell S4148U-ON 210-ALRZ 48x 24x Unified SFP+ 2x QSFP+ 4x QSFP28 F-B OS10 Switch

SKU: NSH-9214
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days

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 S4148T-ON 48x 10GB Copper 2x 40GB QSFP+ 4x 100GB QSFP28 F-B No OS10 Switch

SKU: NSB-9788
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days

NEW Dell S4148T-ON-RA 48x 10GB Copper 2x 40GB QSFP+ 4x QSFP28 B-F OS10 Switch

SKU: NSN-8125
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 S4148T-ON 48x 10GB Copper 2x 40GB QSFP+ 4x QSFP28 F-B No OS10 Switch

SKU: NSN-9964
Condition: New
Shipping: Overnight Options
Warranty: 365 days

NEW Dell S4048-ON 48x 10GB SFP+ 6x 40GB QSFP+ Front-to-Back Air 210-ADUW Switch

SKU: NSN-1862
Condition: New
Shipping: Overnight Options
Warranty: 365 days

NEW Dell S4048-ON-RA 48x 10GB SFP+ 6x 40GB QSFP+ B-F Airflow 210-ADUZ Switch

SKU: NSN-8120
Condition: New
Shipping: Overnight Options
Warranty: 365 days