AddOn AM1333D3DRLPR-16G x1 Lenovo 0A89413 Compatible Factory Original 16GB DDR3-1333MHz Registered ECC Dual Rank 1.5V 240-pin CL9 RDIMM MacBook Pro 2.50GHz 17.0" (MB166LL/A) Up to 2666 MHz speed

Up to 2666 MHz speed for playing the latest games and using heavy software

making it a perfect accessory to have on hand when you're traveling with your laptop or need to have a backup connection to the internet for your desktop

Digital Signal Processing (DSP) USB plug and play simplicity

color characteristics

AddOn AM1333D3DRLPR-16G x1 Lenovo 0A89413 Compatible Factory Original 16GB DDR3-1333MHz Registered ECC Dual Rank 1.5V 240-pin CL9 RDIMM MacBook Pro 2.50GHz 17.0" (MB166LL/A) Up to 2666 MHz speedThis Lenovo 0A89413 compatible 16GB DDR3 1333MHz dual rank registered ECC 1. 5V 240 pin CL9 factory original RDIMM is 100% guaranteed to be compatible with your system and to work right the first time. All of our server memory is built to strict JEDEC standards at one of the tier 1 facilities (Samsung, Micron, or Hynix). Our products are also guaranteed by federal law to not affect or void OEM warranties. DIMM 16 GB bar will run multiple applications