DDR2 desktop memory bar, 240pin, 4GB RAM and 800MHz frequency, stable performance, quick data transmission. Features: Sturdy and easy to carry, suitable for desktop. Adopting 240pin to achieve high interference and static resistance properties. Using high-quality chips and high-quality memory particles, stable performance. Circuit module board possess high temperature resistance, quickly heat dissipation, corrosion and abrasion resistance. 4GB capacity and high memory speed of 800MHz, provide you with quick response time and fluent operation efficiency whether playing games or working, increased memory capacity, increase laptop operating speed, bring higher efficiency to your work and life. Specifications: Memory Frequency: 800MHz Memory Capacity: 4GB Compatible: Desktop Bandwidth: PC2-6400 Voltage: 1.8V Pin Number: 240pin Package Weight: 30g / 1.06ounces Package Size: 133 * 30 * 3mm / 5.24 * 1.18 * 0.12in Note: Memory DDR, DDR2, DDR3 are not common to each other, slot sockets are not the same, and can not be forced to insert, so as not to damage the memory and motherboard, remember! If the memory appears: blue screen, crash, restart, alarm sounds, please follow the following methods one by one, if not, it is determined that it is not compatible. 1. The memory is not inserted, or the gold finger is oxidized. Wipe the memory gold finger with an eraser and reinsert it, or change the slot; 2. The memory slot is dusty or oxidized. Wash it with a brush and water for cleaning panel (it will also be done without water for cleaning panel). 3. Memory is not compatible, try to change the memory. 4. CMOS does not discharge, restore the factory settings (take down the motherboard battery, and then install back). 5. The motherboard is not compatible with the CPU, change the CPU and test again. Packing List: 1 * Memory Bar