The EM Tough Box Modular TB-M from EM Trust is a compact, fanless box PC for modular expansion with USB modules in industrial applications. The TB-M is based on energy-efficient dual and quad-core variants from AMD's Embedded G-Series SoC family with clock speeds of up to 1.5 GHz. The modular system has a wide range of interfaces with six USB 3.0 ports, four USB 2.0 ports and three Gigabit Ethernet ports in a very small space. The TB-M can be supplemented with a guide rail, which can be used to attach a wide variety of USB modules.