DELL Optiplex GX260 booting off of a USB device

[Mr.GreenWrinkle]

Does anyone know if a dell optiplex gx260 will boot off of a USB device, such as an external hard drive or external dvd-rom drive?

I would appreciate some help

[cbagger01]

Get the newest Optiplex GX260 Firmware from the Dell support website.
Enable "USB Keyboard emulation" in the BIOS
Disable "Fast Boot" in the BIOS
As a last resort, try plugging the device into USB port 1 or 2 (located on the back of the PC case).

You can also select an alternative boot device by pressing the F12 key when the Dell boot screen appears.

[Mr.GreenWrinkle]

Which firmware?

[cbagger01]

Which firmware?

The newest one.

IE: The one with the highest revision number.

For example, Dell BIOS A04 is newer than BIOS version A03