After putting it to the second ssd slot, the device acts like completely dead so I couldn’t reach bios. I guess I did it correctly, since the ssd is shorter than the slot I put it with a tape. But computer doesn’t turn on until I remove it. After removing it and pushing the power button it started turning on and off 2-3 times, then turned on normally. I guess this is because I pressed to power button 2-3 times while the second ssd was inserted.