1GB Stick for Dell Inspiron 17 (1720) 17 (1721) 630m 6400 640m 9300 9400 B120 B130 E1405 E1505 E1705 Mini 9 / Mini 910. SO-DIMM DDR2 Non-ECC PC2-5300 667MHz RAM Memory. Genuine A-Tech Brand. at Amazon.com
Upgrading My Dell Inspiron 1720 - Ram and SSD Upgrade - YouTube
Specs DELL Inspiron 1720 T5550 43.2 cm (17") Intel® Core™2 Duo 3 GB DDR2-SDRAM 250 GB NVIDIA GeForce Go 8400M GS Windows Vista Home Premium Notebooks (N0672011)
How to take apart Dell Inspiron 1720 Vostro 1700 – Inside my laptop