cm88General's 88CM has long been held as the industry standard for scribing and etching tools. The tungsten carbide tip performs flawlessly on even the hardestCM88-CM: 1 x RJ45 console port 1 x RJ45 MGMT port. USB. CM88-CM: 2 x USB 2.0 ports (No capacity limit. The 2G4G8G16G32G capacity is tested.)