I'm doing some rewiring. Several years ago I ran CAT-5e cable throughout my house. They terminated using standard wall plugs, on the other end to a patch panel (punch-down), which then patched into a gigabit switch (D-Link DGS-1024D).
This was a bit overkill .. I don't need the patch panel, and it created more space and clutter than what I really need, so I'm in the process of removing the patch panel and just capping the cable with standard RJ45 plugs, then plugging directly into my switch.
However, several times now, after I've done this, they only reconnect at 100baseTX, when they were connecting at 1000baseT before I capped.
What's going on here?