The EL5353 comes with the following items in the box:

Remote extender (REX)
Local extender (LEX)
1 x USB 2.0 Type A to Type B cable
1 x DVI cable
2 x 100-240V power adapter
2 x Country specific power cord
Quick start guide
*Please be aware that the EL5353 does NOT come with a CAT5e cable.