These were made for business installations and have a Euroblock connector. They come with Euroblock to XLR adapters. These are similar to the 8020C monitors. The 8020 has a 20W amp, but the 4020 has a 50W amp so that is better. They have a few scuffs and dents, but it does not affect the sound.
https://www.genelec.com/4020c
Genelec 4020C Bi-Amplified Monitor Features:
Compact, versatile nearfield monitor for project studios, workstations and surround components
Special low distortion 4" woofer and 3/4" metal dome tweeter
Separate 50-watt bass and treble amplifiers
100 dB SPL @ 1m (short term RMS; peak per pair with music material)
Free field frequency response 62 Hz - 20 kHz (± 2 dB)
8 7/8" high x 6" wide x 5 5/8"