The markings "GND" "IGN" and "BAT" evoked something automotive, and a quick look at the manual reveals that this router was indeed designed with that in mind:

The markings "GND" "IGN" and "BAT" evoked something automotive, and a quick look at the manual reveals that this router was indeed designed with that in mind: https://www.cisco.com/c/en/us/td/docs/routers/access/800/829/hardware/install/guide/b_IR829-HIG/b_IR829-HIG_chapter_0100.html#con_1078979 https://www.cisco.com/c/en/us/td/docs/routers/access/800/829...