New Genuine Power Cable (8-pin) - #010-11970-00 for echoMAP 50dv, 50s, 70dv, 70s; GPSMAP 527xs, 547, 547xs, 741, 741xs. Power and connect your compatible GPSMAP device with this 8-pin power/data cable. Use with NMEA 0183 devices and a lamp or horn for visible or audible alerts.