HP 600 Modular Disk System - Manual (Page 21)

Setup 21
6. Install the hard drive.
WARNING: Pinch hazard—Keep hands out of front and rear of chassis when closing hard drive
drawers.
7. When all drives have been installed, close the hard drive drawer.
Installing the I/O module
1. Be sure the hard drive drawer is closed all the way.
2. Release the I/O blank handle.
3. Push the I/O blank handle down until it ejects the I/O blank.
4. Remove the I/O blank.
5. Install the I/O module into the enclosure.