Upgrade or replace memory in your laptop, mini PC, or small-form-factor setup with this genuine SK Hynix 4GB DDR3 SODIMM RAM module. Operating at a clock speed of 1333MHz (PC3-10600S) with CL9 timing (9-11-F3), this 204-pin 2Rx8 non-ECC memory stick provides reliable performance and smooth multitasking for compatible older Windows laptops, MacBooks, and all-in-one PCs.