Your search for "x440-48p" revealed the following:
Extreme 16535 X440-G2-48p-10GE4 48x 1GB PoE+ RJ45 4x 1GB Combo 4x SFP+ Switch
SKU: NSH-8217
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 218.99
• 6 in stock
Call if you need more
Extreme 16179 X450-G2-48p-10GE4-Base 48x 1GB PoE+ RJ45 4x 10GB SFP+ Switch
SKU: NSH-9520
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 192.99
• 8 in stock
Call if you need more
Extreme 16506 X440-48P 48x 1GB PoE+ RJ-45 4x 1GB SFP 2x SummitStack Port Switch
SKU: NSH-3568
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Extreme 16535 X440-G2-48p-10GE4 48x 1GB PoE+ RJ-45 4x 1GB Combo Switch
SKU: NSN-2516
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Extreme 16535 X440-G2-48p-10GE4 48x 1GB PoE+ RJ45 4x Combo 2x SFP+ Switch
SKU: NSN-2057
Condition: New
Shipping: Overnight Options
Warranty: 365 days