Dell Inspiron 1720 (Mid 2007) - Manual (Page 147)

Adding and Replacing Parts
147
3 Replace the four screws on the top of the keyboard.
Memory
CAUTION:
Before you begin any of the procedures in this section, follow the
safety instructions in the Product Information Guide.
You can increase your computer memory by installing memory modules on
the system board. See "Specifications" on page 179 for information on the
memory supported by your computer. Install only memory modules that are
intended for your computer.
NOTE:
Memory modules purchased from Dell are covered under your computer
warranty.
1 tabs (7) 2 keyboard connector
3 notch on keyboard 4 tab on computer base
5 palmrest
2
1
5
4
3