This is a set of a USB serial conversion cable (BSUSRC06 1m) and a 2m serial cable. I used them with CISCO Catalyst network switches and YAMAHA routers, but I am selling them because I sold the devices. Unlike regular mail, this is an anonymous and trackable delivery service. The listed price includes the following (shipping costs are covered by the seller): Mercari system fee: 10% Nekopos shipping fee: 210 yen ● Reference https://www.buffalo.jp/product/detail/bsusrc0610bs.html