4GB DDR3 ECC 1866MHz Memory for 2013 Mac Pro Model 6.1

4GB DDR3 ECC 1866MHz SDRAM for the 2013 Mac Pro Model 6,1. Contains a single 4GB DRAM memory module that is specifically designed and SPD configured for the 2013 Mac Pro Model. These ECC DIMMs contain the Apple Specified Thermal EPROM Sensor. Specifications: Total Capacity: 4GB Bus Speed: DDR3-1866MHz (PC3-14900) Form Factor: ECC DIMM, Dual Rank, Unbuffered No. of Pins: 240 Voltage: 1.5V CAS Latency: 7-7-7-20 Bandwidth: 8.5GB/s ROHS Certified Installation Guide for 2013 Mac Pro RAM Upgrade The following installation video covers the Mac Pro DDR3-1866Mhz. Click here to find Apple's installation guide for the 2013 Mac Pro.