Asus AP130-E1 - Manual (Page 58)

Chapter 2: Hardware setup 2-42
To install the front I/O board:
1. Place the I/O board in the
bracket, component side up.
Secure the front I/O board to the
bracket with a screw.
2. Position the I/O board into the bay
with the component side to the
left (close to the HDDs). Connect
the I/O cables to the connectors
on the back of the I/O board.
3. Insert the I/O board into the bay
until the bracket fits the front
edge of the bay.
4. Secure the I/O board bracket
with a screw.
USB 2.0 connector