Crucial 4GB DDR3L 1333 MHz SO-DIMM Memory Module for Mac

The Crucial CT4G3S1339M is a 4 GB DDR3L memory module that runs at 1333 MHz and fits the 204 pin SO DIMM slots used in many Mac systems. It provides a straightforward way to give an iMac, Mac mini, MacBook, or MacBook Pro more breathing room when you open large files or keep several apps running at once.

Built with Micron-quality components, the module delivers CL9 latency and supports both 1.35 V and 1.5 V operation. This dual-voltage compatibility lets it work in models that demand low power while remaining reliable in standard-voltage boards, helping the computer stay cool and energy efficient.

Installation usually takes only a few minutes and a small screwdriver. After the upgrade, tasks such as editing RAW photos, trimming HD video, or switching between design tools feel smoother and more responsive. Students extending the life of a trusted MacBook, creative professionals handling media projects, and home users who simply want snappier performance will all notice the difference right away.

• 4 GB DDR3L SO DIMM operating at 1333 MHz
• 204 pin format designed for compatible Mac laptops and desktops
• CL9 CAS latency for quick data access
• Dual-voltage support at 1.35 V and 1.5 V
• Works with select iMac, Mac mini, MacBook, and MacBook Pro models
• Simple installation with no advanced skills required