Product Numbers: 495604-B21
Product description: HP 64GB (8x8GB) FBD PC2-5300 SDRAM DDR2 Dual Rank Memory Kit For Intel based ProLiant servers (DL 360/380/580) Option Part# 495604-B21 (8 x 8GB kit) Spare Part# 416474-001 (1 x 8GB - 8 per kit)