When it comes to Multimode, It is one of the two important fiber mode in fiber communications. In a multimode fiber, The most common MM fiber is 62.5/125um and 50/125um fiber.
Meanwhile, To work with multimode fiber, There are multimode fiber patch cord, multimode pigtail, mm fiber optic adapters even multimode fiber attenuators produced.
A multimode fiber patch cords or pigtails are often coming with gray color fiber connectors, orange color fiber cable or aqua color fiber optic cable.the adapters and attenuators are designed in this same way.