I don't think that riser will work with those SFF PCs either?
Check to see if your SFF PCs have Intel vPro with AMT that can be enabled. You can push the MeshCommander "Firmware Loader" (really just a plain html text file loaded into storage) to it and get console access via a web GUI, although you may need a DP or HDMI dummy dongle to actually see the display remotely if there is no monitor connected (serial console access may work). There are various guides floating around the web/YouTube that can help with the setup.
Check to see if your SFF PCs have Intel vPro with AMT that can be enabled. You can push the MeshCommander "Firmware Loader" (really just a plain html text file loaded into storage) to it and get console access via a web GUI, although you may need a DP or HDMI dummy dongle to actually see the display remotely if there is no monitor connected (serial console access may work). There are various guides floating around the web/YouTube that can help with the setup.