2x2GB = 4 GB Transcend PC PC2-5300 RAM DDR2 SDRAM 667 MHz .

Part Code JM667QLU-2G General Barcode 5052217107763 Memory Memory Size (Total) 2048MB (1 module(s) x 2048MB) Memory Type DDR2 SDRAM Memory Speed 667MHz Memory Package Long-DIMM Designation PC2-5300 Pin Configuration 240 Bus I/O Configuration Unbuffered Voltage 1.8V ± 0.1V CAS Latency CL5 Module Configuration 256Mx64 Chip Technology 16-chip