Asus P1-PH1 - Manual (Page 28)

2-12 Chapter 2: Basic installation
2.7.5 Removing a DIMM
To remove a DIMM:
1. Simultaneously press the
retaining clips outward to unlock
the DIMM.
2. Remove the DIMM from the
socket.
Support the DIMM lightly with
your fingers when pressing the
retaining clips. The DIMM might
get damaged when it flips out
with extra force.
Remove the CPU fan and heatsink assembly before removing the
memory module(s). Incorrect removal sequence may damage the
DIMM socket retaining clips.