Features: brand new and high quality brand new and high quality Perfect match: According to the original model design, perfect replacement installation, high-quality components. Quick start, loading and file transfer. Low power consumption, quiet, reliable and durable. Durable material: This product is made of high-quality material, durable, long service for time, firm and stable in use. Compact and portable: being so mini and light-weight, this product does not take much space and can be easily taken away. Meticulous workmanship: The meticulous design, perfect in workmanship, durable and long service for time. Specifications: Material:PCB Memory Type: DDR4 Frequency:2133/2400/2800/3000 MHZ CPU:G3930/G3900 Random Type:Miner Motherboard(with G3900 CPU),Miner Motherboard,(with G3900 CPU, 2Pcs 4G DDR4 Memory Module),Miner Motherboard (with G3900 CPU,2Pcs 8G DDR4 Memory Module),Miner Motherboard(with 4G DDR4 Memory Module),Miner Motherboard(with 8G DDR4 Memory Module) Miner Motherboard Size:Approx.295x190mm/11.61x7.48in Net Weight:690g Note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Miner Motherboard 1x G3900 CPU 1x 4G/8G DDR4 Memory Module