Opened for photography. Stored at home. For those who understand. ■ Modular jack splitter adapter (modular branch adapter / Y-splitter adapter) ■ It has an RJ11 connector at the end of the cable, and the other end is split into two insertion ports (modular jacks). ■ Mainly for telephone lines (landline phones, fax machines, modems, etc.). Unused, but please understand that it has been stored at home. Thank you for viewing.