TYAN Tank TA26 (B5383 Service Manual page 50

4. Remove the LED control board and USB cables from the
LED control board and USB adapter board.
5. Remove the five screws securing the LED control board
and USB adapter board to the bracket.
6. Release the LED control board and USB adapter board
from bracket. After replacement, insert and secure the
unit to the chassis following the above procedure in
reverse.
42 Chapter 3: Replacing Pre-Installed Components