The Lenovo 49Y3735 Express memory module offers a substantial upgrade to your server's memory, enhancing its performance significantly. This 4GB DDR3 module operates at a standard voltage of 1.5V and features a dual rank x8 configuration, striking a perfect balance between performance and power efficiency. With a memory speed of PC3-10600 (1333MHz) and a CAS latency of CL9, it ensures fast and reliable access to data, improving the server's responsiveness to memory-intensive applications. Its express designation indicates Lenovo's assurance of quick and easy compatibility with your existing server setup, enabling seamless integration into select Lenovo servers. This module's capacity and speed make it an ideal choice for small to medium-sized business servers looking to expand memory capacity without a significant initial investment.