M312L2923CUS-A2 – Samsung 1GB PC2100 DDR-266MHz Registered ECC CL2.5 184-Pin DIMM 2.5V Memory Module Brand : Samsung Weight : DDR SDRAM Capacity : 1GB Data Transfer Rate : 266Mhz Pins : 184 Pin Bus Type : PC-2100 Error Correction : Registered ECC Cycle Time : 7.5ns Cas : CL2.5 Memory Clock : 133Mhz Voltage : 2.5