Precise Compatibility: Specially designed -490AAA optical lens replacement, compatible with 1100 head units equipped with deck disk drive module K1KF, ensuring accurate fit and stable performance. Application Scope: Suitable for users, repair shops, and technicians needing to maintain or refurbish 1100 head units with K1KF deck disk drive modules that experience disc reading issues, skipping, or failure to recognize discs. Ideal for Drive Repair: Perfect solution for repairing faulty or damaged deck disk drive modules. Restores normal read/write function without the need to replace the entire drive, saving time and cost. Stable and Construction: Manufactured with quality electronic and optical components to provide consistent performance, long service life, and reliable operation under regular use. Professional Installation Recommended: This -490AAA lens replacement is an internal component and may require technical skills to install. Professional installation is recommended to avoid damage to the head unit or drive module. Color: As Shown Material: Metal Package Contents: 1*laser head Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.