I believe the license allows you to install it one one desktop and one portable device you own of the same operating system, as long as you don't use both at the same time
2.5 Portable or Home Computer Use. Subject to the important restrictions set forth in Section 2.6, the
primary user of the Computer on which the Software is installed under Section 2.2 (“Primary User”) may
install a second copy of the Software for his or her exclusive use on either a portable Computer or a
Computer located at his or her home, provided that the Software on the portable or home Computer is not
used at the same time as the Software on the primary Computer.