Unusual speed problem with the switch.
Unusual speed problem with the switch.
I have a small 5-port network switch (TP-Link TLSG105) connected to an older router, a PC, and a PS5. My PC uses a 2.5Gb port while the switch supports five 1Gb ports. It functions properly at first but later reports the connection speed as 100Mb instead of the expected 1000Gb. I suspect the older router might be affecting performance since it has the least bandwidth in the chain. The issue seems to persist even after rearranging the switch ports, so I’m unsure what’s causing it. Any suggestions on resolving this?
Both settings affect the connection. Turning off and turning it back on can reset the speed, sometimes showing a higher limit before returning to normal.
Test various patch cables, starting with the one connecting your PC to the switch. Gigabit requires all four pairs in the cable, whereas 10/100 only needs two. Windows won’t indicate if your network is limited at any point along the path. The control panel shows only the connection between your PC and the next device in line (your switch).
I used a cable checker to verify everything is functioning properly. All components appear to be in good condition. The main router port speed was also confirmed. Here’s the setup layout: TV → PS5 Router (1Gb) → Switch (1Gb) → PC (2.5Gb) → Office PC → AP (old router, 100Mb).
The PC's network cable seems likely to be the issue. Consider exchanging it with the PS5's cables and test both devices. Check if your PC uses a 2.5 gigabit NIC or a standard Gigabit connection. Adjusting it to gigabit might cause a complete drop instead of reverting to 100 megabits.
The internal motherboard NIC runs version 2.5. No setting for gigabit is available, but I adjusted it to 2.5 automatically. It seems this works.
I agree with the cable. I believe the switch is the issue. These budget gigabit switches seem to have a limited lifespan. Since they're performing well now, dropping them suggests they're nearing the end of their life. I have more than one in the parts bin because they've been acting oddly. The positive side is that they're inexpensive to replace.