![](http://pdfasset.owneriq.net/8/ea/8ea55a76-d083-43dd-8e80-73a23b1aef1a/8ea55a76-d083-43dd-8e80-73a23b1aef1a-bg5e.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