You can safely use this mining power supply thought it has multiple protection features, such as lightning strike protection; and it has good heat dissipation because it has a built-in fan. What it can offer you is practical mining power supply because of its stable performance and high efficiency; and it can meet your needs because it supports 8 graphics cards. It is constructed of metal material. The length is 16.5cm, the width is 15cm, and the height is 8.5cm. Its performance is very stable and it is widely used in various mining equipment. Item Name: Miner Power Supply Material: Metal Voltage: Wide 180-264V Features: Stable Performance, Professional, Anti-rust Function: Support 8 Graphics Cards, Built-in Active PFC Abundant Interfaces: Motherboard Power Supply: (20+4) Pin*1; CPU Power Supply: (4+4) Pin*1; Graphics Card Power Supply: (6+2) Pin*1 Size Details: Fan Size: 14cm/5.51" (Approx.) Size: 16.5cm x 15cm x 8.5cm/6.5" x 5.91" x 3.35" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Miner Power Supply