Total Micro has been manufacturing memory upgrades for over 20 years; offering replacement parts and upgrades for every major brand of portable computer, desktop computer, and server. Using only premium quality components and state of the art manufacturing equipment, each product must pass our 100% quality audit program including complete parametric and performance testing. This attention to detail ensures that our customers will always receive products that provide the highest levels of performance and reliability backed by a Lifetime Limited Warranty. Enables efficient and smooth execution of all your heavy-duty applications with maximum productivity 667 MHz of memory speed with unbuffered signal makes your computer great at multitasking 1 GB memory smoothly executes complex apps and games 240-pin-pin DDR2 SDRAM interface synchronizes electrical and clock signals for an efficient data transfer rate 240-pin for optimal performance and maximum reliability Desktop PC device support for your ram module to allow maximum efficiency and dependability DIMM form factor with 240-pin and 1 GB memory size effectively reduces minimizes the load on the server memory BUS to ensure maximum productivity Unbuffered signal processing allows higher accuracy and enhanced ram module performance