Your search for "jg306c" revealed the following:

HPE JG306C 3600 SI Series 24x Fast Ethernet PoE+ 4x 1G SFP Switch

SKU: NSH-4708
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days

NEW HPE JG306C 3600 SI Series 24x Fast Ethernet PoE+ 4x 1G SFP Switch

SKU: NSN-3831
Condition: New
Shipping: Overnight Options
Warranty: 365 days