I found this while organizing the storage room at home. I believe it's a telephone line cord. I think I probably kept using the original phone line when I replaced my phone, so the cable that came with the new phone remained unused. Looking at other listings, I think it's a 6-pin, 2-wire cord. I'm not very knowledgeable, so please judge from the pictures. I opened it for the photos, but it's unused. I plan to ship it via Yu-Packet Post Mini. I was going to throw it away, but I decided to list it in case someone needs it. If I don't find a buyer this month (August), I will remove the listing. Thank you very much.