Instant On - Wired

I am trying to find the information about the stacking and uplink using for HPE Networking Instant On Switch 20p Gigabit CL4 4p Gigabit CL6 PoE 2p 10GBT 2p SFP+ 370W 1960 (JL807A) switch. If I have used port 27-28 SFP+ for the stacking, can i still use port 25 or port 26 (10GBASE-T ports) to connect to my router which has a 10GBASE-T connection?

Yes, you can use all the Ports. I use the SFP+ ports for an LACP uplink and the 10 GBit copper ports for stacking.