User`s guide

Installing Optional Disk and Tape Drives
7-14
Expansion Brackets
You can install 3½-inch half-height devices in the top-right drive bay. If you
plan to install a 3½-inch device in a 5¼-inch drive bay slot, you must first
install expansion brackets onto the device. Expansion brackets are either
supplied with the device or can be purchased from Digital. Contact your
local Digital sales representative for additional information.