RK2-6931-000CNCable - Formatter flat flexible cable - For use with the M426/M427 printer series
VS1-7258-007CNConnector - Drawer connector - Connector located on bottom of tray assembly frame on right side, which connects tray assemblies to each other
RM2-5413-000CNTray Assembly - Optional 550-sheet paper input accessory tray - Replacement cassette for Tray 3
3JN69-61001Wireless PC Board - HP Jetdirect 3100w BLE/NFC/ wireless accessory - Wi-Fi direct accessory for touch and Bluetooth printing from mobile devices
J8031-61001Wireless PC Board - USB wireless print server kit