![](/images/backgrounds/288769/hp-hp-probook-15-6-c1e26utaba-users-manual-54698494x1.png)
7.For 4540s models, remove the following screws that secure the top cover to the computer:
(1)2 Phillips PM2.0×2.5 screws from the optical drive bay
(2)3 Phillips PM2.0×2.0 broadhead screws from the battery bay
8.For 4440s/4441s models, remove the following screws that secure the top cover to the computer:
(1)3 Phillips PM2.0×2.5 screws from the optical drive bay
(2)2 Phillips PM2.0×2.0 screws from the battery bay
86 Chapter 4 Removal and replacement procedures