The Zebra TC7X Mobile Computer 5-Slot ShareCradle Kit can accommodate either five TC7X's or four TC7X's, plus four spare batteries off of one power supply via the 4-Slot Battery Charger Adapter Cup (sold separately). The 5-Slot ShareCradles can be racked/mounted in a standard 19 in. rack system via the mounting accessory. (Note: 5-Slot Cradles includes Power Supply PWRS-14000-241R, country specific AC line cord, and DC Line Cord 50-16002-029R, all sold separately. Optional 4-Slot Battery Charger, 4- Slot Battery Charger Adapter Cup and Mounting Accessory sold separately).