
To distinguish them people add MT, DT, AIO, SFF, USFF and MICRO acronym to each model when refer to particular computer, for example: "9020 USFF", "9020 SFF", "9020 MT" and so on. Interestingly, the same model of Dell computer can be shared among different chassis types. There are also even much smaller computers of MICRO family. However, it is not allowing me to scan documents or copy them.

After several attempts to uninstall and reinstall the printer, I finally got it to actually print. As a result, I had to reinstall all my programs, including the printer. One group of extra small Dell computers belongs to Ultra Small Form (USFF) family, and normally they are mounted on the back of a monitor. I have upgraded my Dell PC to Microsoft Windows Vista Home Premium. OptiPlex SFF stands for Dell Small Form Factor computers, and that family term is analog for Mini-ITX motherboard size. Dell OptiPlex MT/Minitower, DT/Desktop, SFF Small Form Factor, and USFF Ultra Small Form Factor Hint: Refer to article about cables and connectors for HDD/SSD wiring. Remove the hard drive from the hard-drive bracket. Pry the hard-drive bracket apart to release the hard drive. Disconnect the hard-drive cable from the hard drive, and remove it from the computer.

Slide and remove it to access the hard-drive cable. Push the hard-drive bracket to release it from its lock(#1) and lift the hard drive from one edge(#2).
