Oracle ZFS Storage Appliance Service Manual page 191

9. Line up the replacement DIMM with the connector, aligning the notch with the
key to ensure that the component is oriented correctly.
10. Push the DIMM into the connector until the ejector tabs lock the component in
place.
7120 or 7320: Components may differ slightly between the 7120 and 7320,
11.
however service procedures for each are identical. The illustration shows the
7320. To replace the cover:
Place the top cover on the chassis so that it hangs over the rear of the
a.
storage controller by about an inch (2.5 cm).
Slide the top cover forward until it seats.
b.
Replacing a 7x20 DIMM
Servicing the 7x20 Controller 191