4GB Module DDR3-1333 PC3-10600 204-pin Unbuffered NON-EC 1.5V SODIMM Memory RAM for HP 2000-239WM Notebook Laptop shipping from US Cas Latency: 9 Voltage: 1.5V Buffered/Registered: Unbuffered Multi-channel Kit: Dual Channel Kit Features: For HP 2000-239WM