Re: Sorta OT.. I need to replace this cap.. but what kind is
Looking at the second pic its a 22uF cap. Most likely tantalum which is polarized. What that means is that if you install it backwards it will blow up. It can only handle voltage in a specific polarity.
The 20YZ should be the voltage and tolerance.
Since its in a Pc I doubt its higher than 20Volts. Tolerance is not particularly critical.
Go to a online parts distrubitor and order a few caps.
Look for Tantalum, surface mount, 22uF 20V 10%
Package size match is important. Voltage can be higher than 20 but not lower and value should be 22uF
Mouser.com or digikey.com are good sources for parts.
good luck