![]() If I plug the top UPS into the wall and the bottom UPS into the back of the top UPS, the top UPS has the same behavior as before, but the bottom UPS shows green for the "utility" LED and flashes red for the "battery fault" LED If I plug both UPSs into the wall, they both flash red for the "battery fault" and "utility" LEDs and beep once every 5 seconds However, their behavior changes based on how I plug them in. Unfortunately, all they do is beep at me and flash lights. ![]() They turned out to be HP R5500 XR units, and after I got 240V wired up at the house (the wife is getting clay kilns installed which are also 240V), I was excited to plug them in and get my servers hooked up. ![]() I picked up a nearly flawless Dell 42U rack off Facebook (for only $50!) that came with a couple of mystery UPSs with no guarantees on whether they work or not. ![]()
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May 2023
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