EPoX Computer EP-6VBA - Manual (Page 21)

Installation
EP-6VBA
Page 3-5
DIMM Module Installation
Figure 3 displays the notch marks and what they should look like on your
DIMM memory module.
DIMMs have 168-pins and two notches that will match with the onboard DIMM
socket. DIMM modules are installed by placing the chip firmly into the socket
at a 90 degree angle and pressing straight down (figure 4) until it fits tightly into
the DIMM socket (figure 5).
Figure 3
Figure 4
DIMM Module clip before installation
LEFT KEY ZONE
(UNBUFFERED)
CENTER KEY ZONE
(3.3 V DRAM)