16GB DDR3-1333 (PC3-10600R) Server Memory — Compatible with 647901-B21 & 647653-081

High-capacity replacement memory module compatible with part numbers 647901-B21 and 647653-081. Key specifications: 16GB capacity, DDR3 type, 1333 MHz speed (PC3-10600R). Designed for use as a direct swap or upgrade in systems that require these exact module part numbers.