The servers adopt a simple double-line design. When servers are stacked, the lines connect together to convey a sense of wholeness. The big "x" is titled at 30°, the same as the angle of repose of sand dunes, showing a sense of stability. When servers are stacked, the "x" connects together to form a "∞" helix, indicating the infinite scalability of the servers. The unique hidden security lock makes the device more secure while contributing to a simple appearance. The innovative design of optional air filters makes the servers work stably in more edge scenarios with harsh environments.