400G Optoelectronic PCB-Optical modules are divided into 155M, 622M, 1.25G, 2.5G, 3.125G, 4.25G, 6G, 10G, 40G, 25G, 100G, 400G, etc. Divided by mode: single mode fiber (yellow), multimode fiber (orange).The following is about 400G Optical Module PCB related, I hope to help you better understand 400G光学模块PCB。