I remember that the POE function of the TL-SG1016PE can be configured. Maybe you can try to disable the POE status of the SG1016PE if you don't need to use the POE. If you want to use the POE, you...

The switch is layer 2 switch. OSFP protocol works on layer3. They should haven't the relation.

I see the latest version on the official website is Easy_Smart_Configuration_V1.0.4.3_Utility. Maybe you can also try to use other PCs to find the switch. If it still cannot work, maybe the switch...

It looks like a compatible problem. But the LED lights up, it's strange. PC1----SG1016PE----GS108T----PC2, PC1 cannot ping PC2? Do these two switches have the same IP?

There are two FAQ may be helpful. https://www.tp-link.com/en/faq-1348.html https://www.tp-link.com/en/faq-1344.html I think you also need to configure the VLAN interface for VLAN2/3/4. And if you...

T2600G-28TS should be able to support SNMP V1/V2/V3. I think you can contact TP-Link support.