About this item 🔔 Superior Compatibility: DDR2 800MHz PC2 6400S 4GB Kit (2x2GB) SO-DIMM 200-Pin Non-ECC Unbuffered 2Rx8 Laptop Memory, Designed for select MacBook Pro, iMac, Mac mini models, and AMD, Intel, Mac systems. 🔔 High-Quality and Strict Test: Motoeagle's memory use high quality chips . All chips 100% Tested, with strong compatibility and high stability with motherboards of various brands. It can provide your computer with superior memory quality and the stability required for long-term system operation. 🔔 Plug and Play: Memory upgrade is one of the fastest, easiest, and most affordable ways to immediately improve the performance of your computer. If your PC laptops or Mac system is running slowly, Upgrade memory can solve your problems. 🔔 Attention: Before purchase, please ensure your computer ram model, max ram and ram slot. Before installation, please wipe connection finger gently with eraser.