Based on this product's specifications, here are some alternatives and similar models
Memory module KINGSTON ValueRAM 512MB 533MHz DDR2 ECC Fully Buffered CL4 DIMM Single Rank x8
Summary description:
512MB KINGSTON ValueRAM DDR2 DIMM, 533 MHz clock, CL4 CAS latency, ECC Fully Buffered (FB-DIMM) single-rank x8 configuration. Designed for server and workstation motherboards supporting DDR2 FB-DIMM with error-correcting code, this module provides basic error detection and reliable operation in memory-critical environments.