Als neuer Besitzer eines ThinkPad X280 erkunde ich mögliche Upgrades für dieses Modell. Für diejenigen, die Erfahrung mit dem X280 haben, welche Änderungen oder Verbesserungen haben Sie implementiert, um dessen Leistung oder Funktionalität zu verbessern?

I don’t have an X280, but that cooler looks just like one I used to own. It has a single fan with a blue light, correct?
You might consider the 16:10 HiDPI 13.3″ screen option. I recently discovered there’s also a 2-lane 2560×1600 version available.
My X280 runs Linux perfectly, so there’s no need for an upgrade.
Consider a dual boot setup.
I purchased it new and installed Linux on the first boot, so it has never booted into Windows.
I installed the X210 WiFi 6 card in mine along with an LTE antenna that uses a microSIM.
Upgrading the X280’s Wi-Fi from the AC8265 to the AX210 is a solid choice. Wi-Fi 6 and Bluetooth 5 offer improved stability and better compatibility with modern networks.
You can install a glass touchpad if yours isn’t already one. If your device has a SIM card slot in the back, you can also use it to add a microSD card for extra storage.
What are your upgrade options? What components are still upgradeable on it?