
1) Networking hardware
Found on
https://www.crosswordclues.com/clue/bypass-switch

A bypass switch is a hardware device that provides a fail-safe access port for an in-line monitoring appliance such as an intrusion prevention system (IPS), firewall, WAN optimization device or unified threat management system. In-line monitoring appliances are single points of failure in computer networks because if the appliance loses power, exp...
Found on
http://en.wikipedia.org/wiki/Bypass_switch
No exact match found.