This product is either discontinued or we cannot get that from suppliers.
Brand: Garmin, Model: 010-10922-00, Type: Cable, Colour: Black, Compatible: GPSMAP 4008 / 4010 / 4012 / 4208 / 4210 / 4212 / 5008 / 5012 / 5015 / 5208 / 5212 / 5215.
Use this 2-pin power cable with your GPSMAP 4000/5000.