POWERCORE SYSTEM

Stackable external modular units for computers comprising 5 port ethernet hubs for connecting computers in networked configurations, data port connection hubs for connecting multiple data devices to computer networks; external four-port USB hubs for adding USB ports to computer systems; external USB broadband adaptors for adding ethernet networking capability to computers; external USB port replicators for adding USB ports to computers; replaceable modular low voltage surge protection and alarm units for external devices; surge protection modules for local area network data protection modules, phone, fax, and modems lines, cable coax lines, 10Base-T RJ-45 data lines; surge protected transformed low voltage power outlets; base unit for vertical stacking of modules in external array