TYAN Transport GT20 (B2865 Service Manual page 76

4. Align M3289 in reverse with 4 "M1" stand-offs. Secure the
SMDC with 4 screws as illustrated.
5. Secure M3289 onto HDD tray as illustrated.
6. Insert and secure the HDD tray. NOTE: For internal or
dummy HDD tray, secure the HDD tray with 1 or 2
screws.
7. Arrange and connect the cable to SMDC connector on
mainboard. Be careful not to block the air flow.
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