OWC 4GB UPGRADE: Consists of a single 4GB DDR3 1600 PC3-12800 CL11 1Rx8 204-pin 1.5V SODIMM Memory RAM Module Upgrade memory module compatible with Lenovo ThinkCentre models Edge 72z AIO, M72e Tiny, M72z AIO, M73 Tiny, M92 Tiny, M92p Tiny And M92z AIO. 100% COMPLIANT: JEDEC-Standard and ROHS Compliant. Warranty-Safe Upgrade. Designed and Tested to Meet or Exceed all Manufacturer OEM Specs. INCREASED PERFORMANCE: Memory Upgrades are the Most Effective and Easy Way to Boost your PC's Performance. INDUSTRY LEADING: Consumer-friendly Advanced Replacement Program and Limited Lifetime Warranty, which includes Free Tech Support by Other World Computing. EASY INSTALLATION: In Most Cases, Installing Memory is an Easy DIY project. Watch our OWC Basic Installation Video for Help.