IBM Personal Computer 330-100DX4 (Model: 6573-W5F)

PC 330

Its last sub model used the Pentium P54C processor clocked at 100, 133 , 166 or 200 MHz. It had, depending on the sub-model, up to 4 ISA and/or 3 PCI expansion slots and four (2 external 5.25″, 1 external and 1 internal 3.5″) drive bays. It had in its latest version, the 6577, one DIMM-168 and 4 SIMM-72 memory slots, and featured an IBM SurePath BIOS. This PC has 2 USB 1.0 slots in the back. The latest operating system which can be installed on this PC is Windows 2000, Windows ME, or Windows XP.

The DIMM-168 memory slot takes 5V EDO DRAM and is incompatible with the more commonly used 3.3V SDRAM. The slot looks the same at first glance, but the keying is different. Trying to force a 3.3V SDRAM module into the slot could damage both it and the memory module.