The Nanya NT1GT64U8HB0BY-3C.0726.X2.TW DDR2-667 1Gb 2Rx8 PC2-5300U-555-12-E1 is a DDR2 SDRAM DIMM memory module with a total capacity of 1GB. It is manufactured by Nanya, a trusted brand in memory technology, and originates from Taiwan. With a bus speed of PC2-5300 (DDR2-667), this memory module is designed for high performance and reliability in computers and networking devices. Additionally, it features ECC memory for error correction and improved stability. Ideal for upgrading or replacing memory modules in systems requiring 1GB of capacity and DDR2 technology.