Not Smart Module - Not Viking, Not Simple or GoldenRam but from the HP Original Manufacturer Micron Technology, this replacement or upgrade accessory for the HP 187419-B21 1GB DDR ECC 184-pin DIMM for HP/Compaq ML530 G2, ML570 G2 Proliant Server. Kit contains 2-512MB DIMM modules. 20-day risk-free trial We guarantee that the memory you receive will be 100% compatible with your system. If not, simply return it to us within 20 days for a full refund. In addition, our RAM comes with a limited lifetime warranty and free tech support. So try our RAM for 20 days — there’s almost nothing to lose! Availability: 3-4 days Memory Sub-System: System Memory Module Type: DIMM Memory Type: DDR Additional Specifications: 3.3 volt Fault Tolerance Level: ECC Registered Speed (MHz): PC1600(200MHz) Access Time (ns): CL=2.0 Number of Pieces: 2 DIMM Number of Contacts: 184 Warranty: Limited lifetime warranty Due to the fluctuations in memory prices, please contact Us for to verify Current Availability and Price before you order. Availability: Usually ships in 2-3 business days. 187419-B21o$159.99