Compatible P/N: CWVXW DHT0W HCJWT KJ321 M1Y7N M5Y0X M5YOX NHXVW P8TC7 P9TJ0 PRRRF PRV1Y P15G P15F P16G R48V3 RU485 T54F3 T54FJ X57F1 XV2VV UJ499 YKF0M 0T54FJ 04NW9 2P2MJ 312-1163 312-1164 312-1165 312-1242 312-1310 312-1311 312-1323 312-1324 312-1325 451-11704 451-11947 4YRJH 71R31 7FJ92 8858X 8P3YX 911MD 911MDS Compatible Laptop Models: Dell Latitude E6420 E6430 ATG Series Dell Latitude E6420 E6430 XFR Series Dell Latitude E6520 E5420 E5520 N-series Dell Latitude E6530 Series Dell Latitude E5430 Series Dell Latitude E5420 Series Dell Latitude E5530 Series Dell Latitude E5520 Series Dell Latitude E6540 Series Dell Latitude E6520 Series Dell Latitude E6440 Series Dell Latitude E6420 Series Dell Latitude E6430 Series Dell Precision M2800 Series Dell Inspiron 14R 14R-SE Series 14R-4420 14R-5420 14R-5425 14R-7420 14R-SE-4420 14R-SE-5420 14R-SE-7420 Dell Inspiron 15R 15R-SE Series 15R-4520 15R-5520 15R-5525 15R-7520 15R-SE-4520 15R-SE-5520 15R-SE-7520 Dell Inspiron 17R 17R-SE Series 17R-4720 17R-SE-4720 17R-SE-5720 Dell Inspiron M421R N4420 N5420 N7420 Dell Inspiron M521R N4520 N5520 N7520 Dell Inspiron N4720 N5720 N7720 Dell Vostro 3460 Dell Vostro 3560 Policy 1.If you received an incorrect, damaged, defective, or item not as described, Please feel free to contact us firstly via email for replacement or a full refund (24x7h Email support). 2. return windows will close after 30 days, don't worry about it, you can click on seller store on right corner Ask a question and contact seller directly for help.