Your search for "ABCU-5710RZ" revealed the following:

NEW Avago ABCU-5710RZ 1GB BASE-T RJ45 SFP Transceiver

SKU: NSN-9525
Condition: New
Shipping: Overnight Options
Warranty: 365 days

Avago ABCU-5710RZ 1GB BASE-T RJ45 SFP Transceiver

SKU: NSH-4191
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days