Samsung SL420 pinouts
The connector/pinout information may be applied to the Samsung model SL420

 Samsung SUC-C3 usb data and charging cable pinout for Samsung I8, i80, L100, L110, L120, L200, L201, L210, L310, L310W, L313, L313W, M100, M110, M310, M310 W, NV4, NV9, NV30, NV33, NV40, NV103, NV106, P800, P1000, P1200, SL50, SL102, SL201, SL202, SL310, SL310W, SL420, SL502, SL600, SL620, ST45, ST50, ST60, ST70, ST500, ST5000, TL9, TL90, TL100, TL105, Tl110, TL205, TL210, TL220, TL240, PL50, PL55, PL57, PL60, PL65, PL100, PL150, ES55, ES57, ES63, ES65, ES70, HZ10W, HZ15W, HZ30W, WB500, WB550, WB600, WB5000, D+
Samsung SUC-C3 usb data and charging cable pinout for Samsung I8, i80, L100, L110, L120, L200, L201, L210, L310, L310W, L313, L313W, M100, M110, M310, M310 W, NV4, NV9, NV30, NV33, NV40, NV103, NV106, P800, P1000, P1200, SL50, SL102, SL201, SL202, SL310, SL310W, SL420, SL502, SL600, SL620, ST45, ST50, ST60, ST70, ST500, ST5000, TL9, TL90, TL100, TL105, Tl110, TL205, TL210, TL220, TL240, PL50, PL55, PL57, PL60, PL65, PL100, PL150, ES55, ES57, ES63, ES65, ES70, HZ10W, HZ15W, HZ30W, WB500, WB550, WB600, WB5000, D+