Before purchasing, please make sure your computer can use 64mb 72 pin EDO modules.

If your computer has 4 sockets and can take maximum of 128mb memory then you can install only 4, 32mb EDO modules. You can not use 2, 64 mb modules.

If your computer has 4 sockets and can take maximum of 256mb memory then you can install  2, 64mb modules or 4, 64mb modules.

Following Intel chipset can support 64MB 72 pin EDO modules:

Intel 430HX chipset
Intel 430TX chipset
Intel 430FX chipset
Intel 440FX chipset

Many other computers can use 64mb  EDO modules. Please consult your system manual for more information.  32mb 72 pin EDO modules work in most 72 pin systems.