IBM 6380 User Manual page 40

To remove a system-board tray from a 2U chassis, complete the following steps:
1. Read the safety information that begins on page vii and "Installation guidelines"
2. Turn off the system-board tray and all attached devices (see "Turning off the
3. If external cables are connected to the front of the system-board tray or
4. Press in on the two release handles, pull the system-board tray and expansion
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System x iDataPlex dx360 M2: User's Guide
on page 23.
system-board tray" on page 21).
expansion enclosure, note where they are connected; then, remove them.
enclosure, if one is attached, out of the 2U chassis, and set it on a flat,
static-protective surface.