i really have no knowledge about laptops.
i just got this laptop called Dell inspiron 1100(its old i know) and im not too sure on
what kind of memory i need.(i want to upgrade).

i been thinking this

PC2100-DDR-266Mhz-SODIMM-200pin

Only problem is it says my supported Frequencies are 100,133mhz. and my current memory cards are 133mhz. im not sure if 266Mhz memory are gona work on my laptop. any suggestion or help is appreciated. Also i couldnt find a lot of pc2100 memory with 133mhz.
Edit - Dell inspiron 1100 support 200pin memory right ?
Thanks everyone

anyone has a idea ? wanting to purchase the memory asap. but cant until im sure.

Find out at the source what ram you have for sure.

http://accessories.dell.com/sna/Dell...iron%20Laptops

http://www.crucial.com/systemscanner/

Read about how to install and what to install.

Updating ram & troubleshooting

According to Crucial also;

http://www.crucial.com/uk/store/list...l=Dell&cat=RAM

I recently upgraded my memory in my dell inspiron 1100 and used 2 sticks of 512mb DDR DIMM PC2100 133mHz. This added a gig of memory which is the most you can put in it. I did alot of research first and this was the memory that was compatable. Also extremely easy to install yourself. Good luck I hope it works for you. Also If you plan on doing anything with it you might want to upgrade your harddrive since it only has a 30gig harddrive in it standard.