Specifications:
Matched quad of 512MB PC2-5300, DDR2-667, 667Mhz, Dual Rank, Latency 5-5-5, ECC, Fully-Buffered, 64x72, 1.8V, 240pin FB-DIMMs.
Contains four (4) 512MB matched FB-DIMM memory modules that are specifically designed and SPD configured for the Mac Pro Model 1st Generation.
These modules are compatible with the latest Apple Firmware.
Watch our installation video:
orclick here for Apple's installation guide (PDF.)