Will a 10/100 ethernet hub reduce my speed.

Solution
The 10 in 100/10 is a fallbackup speed. If the switch is having trouble communicating with a device at 100 Mbps, it'll drop down to 10 Mbps and try again. Technically Gigabit Ethernet devices are 1000/100/10 but it's rarely written out that way. Everyone just writes 1000 Mbps and understands the slower slower fallback speeds are available.

If your cables are clean and there's no significant interference, your 100/10 Mbps switch will run at 100 Mbps. So don't worry about 10 < 25.

That said, you can buy Gigabit Ethernet switches for $20, less when on sale. While a 100 Mbps switch will not limit your Internet speeds, it will cap out transfers between two computers in your house at 12.5 MB/s (note that 802.11ac wireless frequently...
The 10 in 100/10 is a fallbackup speed. If the switch is having trouble communicating with a device at 100 Mbps, it'll drop down to 10 Mbps and try again. Technically Gigabit Ethernet devices are 1000/100/10 but it's rarely written out that way. Everyone just writes 1000 Mbps and understands the slower slower fallback speeds are available.

If your cables are clean and there's no significant interference, your 100/10 Mbps switch will run at 100 Mbps. So don't worry about 10 < 25.

That said, you can buy Gigabit Ethernet switches for $20, less when on sale. While a 100 Mbps switch will not limit your Internet speeds, it will cap out transfers between two computers in your house at 12.5 MB/s (note that 802.11ac wireless frequently hits 35 MB/s if the other computer is on Gigabit Ethernet). If you have a file/media server, or occasionally copy files between computers over the network, it's probably worth paying $20 for a Gigabit switch. (The Gigabit switch will help even if the LAN port on your router is only 100 Mbps. Just plug the switch into the router and make sure you plug all your faster devices into the switch, not the router.)

https://www.amazon.com/dp/B00A128S24
 
Solution