Your search for "10301" revealed the following:
Extreme 10301 10GB BASE-SR 850nm MMF SFP+ Transceiver
SKU: NSH-7038
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 21.99
• 21 in stock
Call if you need more
NEW Extreme 10301 10GB BASE-SR 850nm MMF SFP+ Transceiver
SKU: NSN-0794
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 255.99
• Only 2 remaining
Call if you need more