HP SureStore E Tape Library Models 2/20, 4/40, and 6/60 - (English) User's Guide
Library Installation
Installing a Stand-Alone Library in a Rack
Chapter 11-8
3. Remove the feet as follows:
a. Remove the 10-24 torx T20 machine screws from the side of each
foot assembly.
b. Slide the feet off the library.
Figure 1-2 Removing the Feet
4. Follow the rackmounting procedures in “Installing the Library into a
Rack” on page 1-9.