Tyan Computer THUNDER N3600QX - Manual (Page 29)

Simply find the appropriate slot for your add-in card and insert the card
firmly. Do not force any add-in cards into any slots if they do not seat in
place. It is better to try another slot or return the faulty card rather than
damaging both the motherboard and the add-in card.
TIP: It’s good practice to install add-in cards in a staggered manner
rather than making them directly adjacent to each other. Doing so allows
air to circulate within the chassis more easily, thus improving cooling for
all installed devices.
NOTE
YOU MUST ALWAYS unplug the power connector to the
motherboard before performing system hardware changes
to avoid damaging the board or expansion device.
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2.11 - Installing Add-In Cards
Before installing add-in cards, it’s helpful to know if they are fully compatible
with your motherboard. For this reason, we’ve provided the diagrams below,
showing the slots that may appear on your motherboard.
PCI-E x 16 slot
HTX slot
SO-DIMM slot