Seems to work just fine. The female jacks on fairly long wires could be a bit bulky for some users, but for me it extended the mouse lead to a longer and better length. The jacks will join together if desired, or can be left separate if they are leading in different directions. This is very old Radio Shack inventory with the clear plastic bubble pack turned brown from sunlight, but since this packaging is thrown away it is not an issue. The discounted price is more than right.