Defeating Vendor Lock-Ins: "Liebert GXT4."

Certain double-conversion UPS units by Liebert (in my case — a GXT4-2000RT120) appear to contain a boobytrap whereby off-the-shelf (needs two 12v/80mm) high-efficiency/quiet fans will not operate — the boot will abort with a Fan Out of Order error. The pill: install a 100 ohm wirewound resistor in parallel with the front fan connector (on […]