... The uplink module: The picture below is for the GPON board, i.e. GPBD, 8 modules included; ... :you can also select EPON board or GPON board as following:GPON board, GPBD:EPON board, EPBD:MA5680T ... and uplink board, 2 uplink modules included;1 GPON or EPON 8 ports board, 8 modules included ... size of the OLT equipment. original Huawei MA5680T GPON or EPON OLT equipment of larger model, Optical ...