Compatible Models： For DELL Inspiron 15R-SE-4520 For DELL Inspiron 15R-SE-5520 For DELL Inspiron 15R-SE-7520 For DELL Inspiron 17R-SE-4720 For DELL Inspiron 17R-SE-5720 For DELL Inspiron 17R-SE-7720 For DELL Inspiron 4420 For DELL Inspiron 4520 For DELL Inspiron 4720 For DELL Inspiron 5420 For DELL Inspiron 5425 For DELL Inspiron 5520 For DELL Inspiron 5525 For DELL Inspiron 5720 For DELL Inspiron 7420 For DELL Inspiron 7520 For DELL Inspiron 7720 For DELL Latitude E5420 E5420 N-Series E5430 E5520 E5520 BRC 6 E5520 N-Series E5520m E5530 E6420 E6420 N-Series E6430 E6430 ATG E6520 E6520 N-Series E6530 Compatible Part Numbers： P8TC7 P9TJ0 R48V3 PRRRF RU485 T54F3 T54FJ UJ499 YKF0M X57F1 04NW9 312-1163 312-1242 312-1310 312-1311 451-11947 8858X 8P3YX 911MD HCJWT KJ321 M5Y0X NHXVW 4YRJH.