1, (RJ11) RJ45-DB9, DB15, DB25 network converter
2. D-USB series assembly shell quick shell: DB9, DB15, DB25, DB373 DB/DKN series fast shell: 9P/15P/25P/36P
4 DB Series Adapters: 9-9, 9-25 25-25, 25-36
5, DB, DP. DR, DIDC.57 series, soldered, plug-in, terminal connector
6, Network, telephone tee, straight through