i am using p.c 2100 256MB ram with a p.c 3200 512MB ram.Will this harm my computer
These are compatible modules. The speed of the pc-3200 is 400. The speed of the pc-2100 is 266. Both modules will run at the lower speed.
So Can I Use It Without Harming My Computer
why didn't you read the guide? https://www.techspot.com/vb/topic65114.html