The Vintage 64MB EDO ECC DIMM KMM372F803CK-5 is a RAM module designed for use in SUN Ultra 5 or 10 systems. With a total capacity of 64 MB and ECC memory features, this DIMM from Samsung & SUN is a reliable option for those looking to upgrade their computer's memory capacity. Featuring 168 pins and a form factor compatible with the specified systems, this EDO RAM module offers high performance and stability for your computing needs. Made in South Korea, this unit is a dependable choice for enhancing your system's overall performance.