Amazon.com: New Laptop Keyboard Replacement for Dell Inspiron 17-3721 17-3737 17R-5721 17R-5737 PN:JJNFF 0JJNFF PK130T31A00 1XVY2 V119725BS US Layout Black Color : Electronics
Dell inspiron 17R 3721/5721/3737/5737 Disassembly and fan cleaning - Laptop repair - YouTube