Here lies the memories of broken technology.
Here is a 2001 era Compaq mPGA478B based motherboard (P52C50) using Nichicon branded caps. They are 6.3V 2200uF series HM(M). Uneconomic to replace now.
I bought it second hand back in 2007 to test VOIP trunking. It was running 24×7 in a cantina until one day it didn’t boot after a power outage.