Description The diagnostic card for laptop memory card slots is , and the diagnostic card for desktop memory card slots is DD. Purchasing only one cannot be used because the code display is on the DD diagnostic card. The diagnostic card for memory card slots is basically compatible with all motherboards with memory card slots. For computers with only built-in memory, that is, motherboards without memory card slots, you must use the V8 multi-function diagnostic card to cooperate. The diagnostic card for memory card slots has strong compatibility, and the DD diagnostic card can be compatible with desktop computers and all-in-one computers can be compatible with computers of , such as common , for , and for Easy to use, no need to find diagnostic interfaces on the motherboard. Use DDR3 memory card slots, such as for E450. The memory diagnostic card cannot be inserted in parallel and must be inserted into the motherboard's memory card slot at a 45-degree angle. type: computer diagnostic card color:White+green Material:PCB Package Contents: 2 x memory card slot diagnostic card 3 x cable(random color, cannot specify the color) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to be slightly different from the real thing. The allowed measurement error is +/- 1-3 cm.