Setting default gateway for NTP access on TP-LINK T2600G-28TS network switch | Paul George
How to set up NTP Client on NX102 PLC, and synchronize time to internet NTP server - YouTube
TP-Link Wireless Expander contacts time servers 140,000 times a day. Thanks Pihole for this. : r/pihole
Archer C9, Time Zone, NTP Server I / NTP Server II, NTP Server I, Server II, Enable Daylight Saving | TP-Link Archer C9 | Archer C9 V2 User Guide (Page 122)