comments:
InvisiBillnet posted on r/homenetworking2d
FYI hubs were deprecated and removed from the Ethernet standard 15 years ago, because nobody had been using/making them for a while. They were technically allowed in the Gigabit standard, but essentially never existed after 100Mb. These days, "Ethernet splitters" are much more likely to be little RJ45 pinout adapters, which allow you to combine two 100Mb/4-wire connections onto a single 1Gb/8-wire cable, then break it back out to two connections at the other end. https://www.amazon.com/Ethernet-Splitter-Adapter-Network-Internet/dp/B092DDYPYD/ Either that or just a dumbed-down name for an Ethernet switch, like OP posted.