IBM FRU: 20L0242 64MB PC66 66MHz 8Mx64 3.3V 144-Pin DIMM Memory Card for Notebooks / Laptop. IBM memory meets the current and future demands of high-performance, low-power embedded computing, making it ideal for communications, transaction terminal, interactive client, industrial automation applications, as well as for standard home use. Compatible with most other brands of laptops like Dell, IBM, Gateway, HP, Compaq and others that require PC66 144-Pin memory.