Item description from the seller
Descriptions 

USB Power Button Board for HP Probook 440 450 G6 G7 445 G6 445 G7 455 G6 455 G7 ZHAN 66 PRO 14 G2 G3 DA0X8JTB8D0

Compatible models: for HP Probook 440 450 G6 G7 445 G6 445 G7 455 G6 455 G7 ZHAN 66 PRO 14 G2 G3 

P/N: DA0X8JTB8D0 
Condition: New
Features:
Each item is tested before shipping and are 100% working. 

Package include:
1×USB Power Button Board 
Please read before purchase: 
You need to physically match up the one you need with the picture, otherwise, we are not responsible for mistaken purchase.Please check your Part Number is the same as the one listed before you make your purchase.If you need more quantity, please contact us to add stock