Item Type: DDR5 Desktop Mainboard Test Card_x000D_ Battery: 1 x button battery CR2032 (delivered without battery)_x000D_ Adaptation: The DDR5 tester supports all motherboards with DDR5 interfaces from for INTEL and for AMD, and uses LED to indicate the open circuit and short circuit of the data line and address line. _x000D_ Application: It is used to repair motherboard failures such as no boot, no display, and no memory reading. An essential tool for repairing computer motherboards. _x000D_ Memory Type: UDIMM 1Practical Use: Supports for intel and for AMD motherboards with DDR5 interface, and no external power supply required. 2Easier Repair: Applied to repair motherboard failures such as no boot, no display, or no memory reading, very useful. 3Has LED Light: The LED lights are used to indicate the open and short circuit of the address lines and the data lines. 4Working Tips: Due to different motherboard designs, some lights may not light up. Can use the same motherboard to diagnose faults. 5Easy to Install: Powered by 1pc CR2032 button battery, the lightweight and compact desktop mainboard test card is easy to install.1. When the DDR5 tester is testing the motherboard, the motherboard must be plugged into the CPU, and the test light will be on, because the signals of the memory part are connected to the CPU. _x000D_ 2. After the battery of the tester has been used for many times, the brightness of the tester will become dim. At this time, the battery voltage is too low, and the battery needs to be replaced in time. _x000D_ 3. The various signals of this tester, due to the different motherboard designs and chip sets of various motherboard manufacturers, some signals may be displayed differently. Please use the same motherboard to compare and judge. _x000D_ 4. There are two types of interface for desktop DDR5 currently on the market. When one side cannot be inserted into the memory slot for testing, please switch to the other side for testing. _x000D_ 5. The memory on the motherboard varies according to the usage, the signal names on the memory pins will change, but the arrangement of all the pin numbers will not change, so the DDR5 light tester changes the name of the light to the pin number to make it convenient for customers to clearly know the pins with abnormal signals. _x000D_ 6. This tester with light only supports the memory hanging on the CPU. Memory hanging on for Millbrook or for NB is not supported.1 x DDR5 Desktop Mainboard Test Card