IGUATU The appearance and color of different batches of products may be different, which not affect the usePs:1. N card: refers to the graphics card product developed by for company.2. A card: refers to the graphics card product developed by for AMD company.Note: since the driver can only support 8 cards at most, the mining combination of 12 cards is generally (6N + 6A (8N + 4A, 8A + 4N) (7N + 5A, 7A + 5N)Color: BlackMaterial: PCBPackage Contents:1 x Motherboard1 x Thermal Grease(Random Color and appearance, 't accept the specified.)1 x SATA Cable(Random Color and appearance, 't accept the specified.)1 x Fan(Random Color and appearance, 't accept the specified.)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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.