I bought 2 surge protectors from APC, one for landline and one for ethernet. With millions of dollars of home devices connected to a landline phone and Ethernet network, these devices offer some level of security. While I have surge protectors for my whole house, it doesn't protect a landline phone or network cable and attached devices, so I find them absolutely necessary. (I also have something similar for my cable TV that has been reviewed elsewhere). After installation, I haven't noticed any degradation in my landline phone connection or broadband speed. One day I will post pictures of my data/comms/TV center showing these devices. Please try again in about a month.
BESTTEN Wall Outlet USB Charger: Surge Protector with LED Night Light, 4 USB Ports, 6 AC Outlets - ETL Listed, White
12 Review
Southwire 34930 Surge Guard 30A: Full Protection Portable with LCD Display - Superior Safety in Sleek Black Design
12 Review
VICOUP Multi Outlet Extender: Surge Protector with 3 USB Ports for Home and Office - Essential USB Outlet Adapter Splitter
11 Review
Allocacoc PowerCube ExtendedUSB, 4 Outlets, 2 USB Ports, 5 ft Cable, Mounting Dock, Surge Protection, Childproof Sockets, ETL Certified - Blue
12 Review
Xiaomi Power Strip Surge Protector 3 Sockets 3 USB Black
26 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, 10A / 2500 W black 1.8 m
20 Review
Extender Xiaomi Mi Power Strip 3, XMCXB01QM, 3 sockets, C/C, 10A / 2500 W white 1.8 m
30 Review