The Kingston KVR533D2N4/256 is available from Calhoun Technologies. Calhoun Tech can help your company save up to 80% on IT Hardware. Manufacturer: Kingston Part Number: KVR533D2N4/256 Details: Kingston KVR533D2N4256 256MB KVR533D2N4/256 PC2-4200 DDR2-533MHz Unbuffered Non-ECC Memory CL4 KVR533D2N4/256