The Intel Management Engine (ME) driver manages remote management features (vPro). Ignoring this can leave your Neo 5 vulnerable to known security exploits like SA-00125. Install it immediately.
Use another PC to download the LAN driver onto a USB flash drive. Then plug it into the Neo 5 and run the installer. Alternatively, use your smartphone’s USB tethering if you have cellular data. lenovo thinkcentre neo 5 drivers download