QIDI BOX Expansion KitOverview QIDI BOX Expansion Kit includes 2pcs 7 into 1 connectors, PTFE Tube 1600mm*12, PTFE Tube 50mm*2,1 pc PTFE Tube Sheath, 1 pc QIDI BOX signal cable 2m, which supports the expansion of 4 multi color boxes to achieve 16 color printing. Note: PLUS4 QIDI BOX Expansion Kit is not compatible with the Q2 model, while the MAX4 model is compatible with the Q2 model. If you are using a Q2 or MAX4 model, please select Q2 MAX4. If you are using a PLUS4