4Slot Ethernet cradle with 4Slot spare battery charger, charges up to 4 devices and up to 4 spare batteries on the same cradle and provides Ethernet communication.
Single slot USB cradle, w/spare battery charger, charges one device and one spare battery. Allows USB communication to the device with an additional micro-USB cable.
USB cable, provides fast-charge when a MC33 PP+ battery and a wall adapter is used, it also allows USB communication to the device when connected to a PC