We recommend not using this device! If at all possible...pull a new cable. But if that simply isn't possible, this cat 5 coupler is the next best option. Simple, quick, cheap, and reliable.
Features
Join two category 5e (or lower) cables.
Standard 110 style punch down terminals.
Shielded box with strain-relief.
Double-stick tape or screw mounting (included).
Extend Category 5e UTP cable without loosing Category 5e performance.