All leds should light up briefly, to show that, Both 10base-t lights should remain lit after th, If using 10base-t cabling, the lower led remain – Comtrol VS1100 Configuration Guide User Manual

Page 17: The port 1 led begins flashing, to indicate tha, The upper 10base-t led flashes briefly, as the, The port leds begin flashing in a “sweeping” se, Table 4. 10base-t led descriptions, Power-on diagnostics