Your search for "Dell N1548" revealed the following:
NEW Dell S4148U-ON-RA 48x (24x Unified) SFP+ 2x QSFP+ 4x QSFP28 B-F OS10 Switch
SKU: NSN-8126
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Dell S4148F-ON 210-ALSI 48x SFP+ 4x QSFP28 2x QSFP+ F-B Air OS10 Switch
SKU: NSN-1906
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Dell S4148FE-ON-RA 48x 10GB SFP+ 2x 40GB QSFP+ 4x QSFP28 B-F No OS10 Switch
SKU: NSN-9967
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Dell S4148FE-ON-RA 48x 10GB SFP+ 2x 40GB QSFP+ 4x QSFP28 B-F No OS10 Switch
SKU: NSB-9791
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Dell S4148FE-ON 48x 10GB SFP+ 2x 40GB QSFP+ 4x QSFP28 F-B No OS10 Switch
SKU: NSN-9966
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Dell N1108T-ON N1100 Series 8x 1GB RJ45 2x 1GB Combo Switch
SKU: NSH-9916
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Dell S4048T-ON-RA 210-AHMV 48x 10GB Copper 6x 40GB QSFP+ B-F Air No OS10 Switch
SKU: NSB-9785
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Dell S4048T-ON 210-AHMR 48x 10GB Copper 6x 40GB QSFP+ F-B Air OS10 Switch
SKU: NSB-0132
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Dell N3248TE-ON-RA 48x 1GB RJ45 4x 10GB SFP+ 2x QSFP28 B-F Air OS10 Switch
SKU: NSN-9971
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Dell S4148U-ON-RA 48x (24x Unified) SFP+ 2x 40GB QSFP+ 4x QSFP28 B-F OS10 Switch
SKU: NSB-6545
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days