Based on this product's specifications, here are some alternatives and similar models
Power jack with cable for Samsung NP-R518 NP-R519, 19V 3.42A, replacement DC power connector
Summary description:
Replacement power jack with attached cable designed for Samsung NP-R518 and NP-R519 laptops. Rated 19V 3.42A, it provides the DC connection between the AC adapter and the laptop motherboard. Intended for repair or replacement of damaged input jacks, it restores stable power delivery and charging functionality. Easy to install for technicians and experienced users.