Super Flat Modular Cord Set of 4 【High Compatibility】 Compatible with a wide range of devices such as telephones, fax machines, modems, and computers. 【Convenient Design】 Ultra-thin 0.5mm for discreet and tidy wiring. Compatible with both 6-pin 2-wire and 6-pin 4-wire configurations. This is a new, unused item, but it has been stored for a long time. Please refrain from purchasing if you are concerned about this.