Black Box - surge protector

Black Box complete line of data protectors provides protection for virtually any type of interface. Choose from protectors for twinax or coax cable, RS-232 and RS-422 lines, telco, T1, CSU/DSU, or Ethernet, ARCNET, and Token Ring interfaces. All the protectors guard your data against ground-loop currents, electrostatic discharge, surges, and spikes.