Kit, Main Logic Board USB, USB Host, Bluetooth, Modular Connectivity Slot, ZD421D, ZD621D, ZD421T, ZD621T, ZD621R
Kit, Ethernet Module, ZD421D, ZD421T, ZD421C
Kit, Serial Module, ZD421D, ZD421T, ZD421C
Kit, Wireless Module, WiFi 802.11ac, MFI 3.0, Bluetooth 4.1, All countries except USA, Canada and Japan, ZD421D, ZD621D, ZD421T
KIT, Serial Port Adapter