Motherboard for 330-15IKB / 330-17IKB — 5B20R19897 NM-B451 with I7-8550U CPU and 4G RAM

Replacement laptop motherboard compatible with models 330-15IKB and 330-17IKB. Identified by part number 5B20R19897 and board model NM-B451. Built-in I7-8550U CPU and 4G RAM included. Suitable for repairing or refurbishing the specified laptop models — confirm connector layout and mounting points match your machine before purchase.