Specifications and models:

[Self-connection] 2 plug-in position [B2 wireless]]

[Self-connection] with USB +1 plug-in [B2 U wireless]]

[Self-connection] 3 plug-in position [B3 wireless]]

[Self-connection] with USB +2 plug-in position [B3 U wireless]]

[Self-Wiring] 4 Plug-in [B4 Wireless]]

[Self-connection] with USB +3 plug-in position [B4 U wireless]]

[Self-connection] 5 plug-in position [B5 wireless]]

[Self-Wiring] with USB +4 Plug-in [B5 U Wireless]]

[Self-connection] 6 plug-in position [B6 wireless]]

[Self-connection] with USB +5 plug-in position [B6 U wireless]]

[Self-connection] 7 plug-in position [B7 wireless]]

[Self-connection] with USB +6 plug-in position [B7 U wireless]]