SI the iMac M4 is equipped with 2 thunderbolt 4 ports. You can connect an external source using an adapter or a thunderbolt-HDMI cable. The only thing to keep in mind is that apple products have a particular density per inch of 218 PPI, which in simple terms means that using particular graphic resolutions (e.g. 5120x2880 pixels) therefore if sources with low resolutions (e.g. 1920x1080 pixels) are connected, the images will not be perfectly sharp but may appear slightly blurred. This defect is hardly visible to the untrained eye, but it is fair to list it. If, on the other hand, the PC is equipped with a good video card that can withstand very high resolutions, the problem does not exist. Cordially. Stefano