1. Ethereum mining rig uses B85 chipset, native PCIE, large bandwidth and strong compatibility. 2. Mining ethereum control card adopts backplane design, which is stable and not deformed; control card + slot bottom plate, modular design, convenient operation and maintenance, and convenient disassembly and assembly. 3. Bitcoin miner has a built-in power supply, easy to manage, clean and tidy inside, few lines, and unobstructed air ducts. 4. GPU miner graphics card is powered separately to reduce the overload of the motherboard, reduce the risk of motherboard damage, and make the graphics card work more stable and have a longer lifespan. 5. GPU miner case front and rear dual-row fan layout, dual-channel heat dissipation, high-speed fan, service life of 50,000 hours, current as low as 0.48A, large air volume, and long service life. 6. The mining rig chassis has 65mm ultra-wide graphics card spacing, which is suitable for most graphics cards on the market. 7. The chassis is made of cold-rolled steel plate, the thickness is 1mm, and the surface is black sandblasted. 8. Unique front panel system, front VGA interface, USB interface, wired network interface, power interface, can be deployed at will, more humane. 9. Unique graphics card work detection system, which can quickly read the number of graphics cards and quickly identify faulty graphics cards.1.How do you guarantee the quality? We have our own factory and professional production line. In the production process of each machine. we strictly abide by the relevant production process guidelines. After the production is completed. each machine will be strictly tested before shipment to ensure that each machine you order can be used normally. If you need. we can send the test video to you. 2.What can I buy from you? GPU mining machine. mining machine power supply. mining graphics card.Mining machine fan.power cord and mining machine related wires. 3.Why should 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. We have rich production experience and market experience. For GPU mining machines. we have a strong supply capacity. In addition. we have professional after-sales team and foreign trade team to ensure that each customer has the best shopping experience.