LG PSW400B Owner's Manual page 8

The model and serial number of the product is
located on the back or one side of the product.
Record it below should you ever need service.
MODEL
SERIAL
Supported Displays:
(Consult the retailer for detail list of models.)
PSW400B/PSW400BG Supports:
- 42PJ*/50PJ*/50PK*
PSW600B/PSW600BG Supports:
- 60PK*