Please check BEFORE purchasing the shape of YOUR connector on the laptop, because there are several models depending on the month of manufacture of your device!
DC power connector for Samsung
NP-N220 NP-N230 NP-N350 NP-NB30
NP-NC110 NP-NF210 NP-NF310
NP-RV508 NP-RV510 NP-RV515 NP-R730
N148 N150 N128 N140
NP-R525 NP-R530 NP-R540 NP-R580
R428 R429 R440 R423 R425
R510 R560 R700 R70 R71
Please check BEFORE purchasing the shape of YOUR connector on the laptop, because there are several models depending on the month of manufacture of your device!