I bought some of these because I don't have fiber between buildings. Some of them still work, although I'm not sure if they've really been put to the test. But I recently lost 3 of them and 3 network switches that were supposed to protect them. Some comments give 5 stars and say "I hope this works".
π» Tupavco TP302 Ethernet Surge Protector (2 Pack) with PoE+ Gigabit and Gas Discharge Tube for Full Protection - RJ45 Lightning Suppressor - Mounting Flange - Ideal for LAN Network CAT5/CAT6 - Thunder Arrestor - GbE 1000 Mbps.
11 Review
Southwire 34930 Surge Guard 30A: Full Protection Portable with LCD Display - Superior Safety in Sleek Black Design
12 Review
Allocacoc PowerCube ExtendedUSB, 4 Outlets, 2 USB Ports, 5 ft Cable, Mounting Dock, Surge Protection, Childproof Sockets, ETL Certified - Blue
12 Review
Fellowes 10-Outlet Metal Split Surge Protector - 1,250 Joules, 6ft Cord in Black and Silver
12 Review
Extender Xiaomi Mi Power Strip 3, XMCXB01QM, 3 sockets, 10A / 2500 W white 1.8 m
26 Review
Extender Xiaomi Mi Power Strip 3, XMCXB01QM, 3 sockets, C/C, 10A / 2500 W white 1.8 m
30 Review
Tripp Lite TLP1008TEL 10 Outlet Surge Protector Power Strip with 8ft Cord, Tel/DSL Protection, RJ11 and $150,000 Insurance - Silver
12 Review
Extender Xiaomi Mi Power Strip 3, XMCXB01QM, 3 sockets, 10A / 2500 W black 1.8 m
20 Review