1. Ethereum mining rig uses B85 chipset, native PCIE, and large bandwidth. 2. The control card adopts the fixed design of the back plate, which is stable and not deformed. 3. Modular design, control card and slot backplane adopt split design, easy to maintain. 4. Equipped with a power shunt board to power the graphics card separately, reducing the overload of the motherboard, reducing the risk of motherboard damage, and making the graphics card work more stable and have a longer lifespan. 5. Front and rear dual row 8 fan layout, one inlet and one outlet dual channel heat dissipation, high-speed fan, large air volume, 50,000 hours of service life. 6. Ethereum case has 65mm graphics card pitch, which is suitable for most graphics cards. 7. The shell of gpu miner is made of cold-rolled steel plate with a thickness of 1mm, and the surface is black sandblasted.1. How does your machine guarantee the quality? In the production process of each machine, we strictly abide by the relevant production process guidelines and production processes. After production is completed, each machine will undergo rigorous testing before shipment to ensure that every machine you ordered can be used normally. 2.How much is shipping? Shipping costs depend on factors such as package size, weight, and destination. The shipping cost will be reflected in the quotation we send to you. 3. Why buy from you instead of buying from other suppliers? We have been engaged in the research and development, production and sales of blockchain mining machine related products since 2015, and have rich production experience and market experience. For blockchain mining machines, we are very professional. In addition, we have established a professional after-sales team and foreign trade team to ensure that every customer can get the best shopping experience.