l 1.5 米长一条 The power cord of the aviation port is 1.5 meters long at both ends
l One pad after heightening
l 8 个（ 4 长 4 短，加后垫的使用长螺丝，不加后垫的只能使用短螺丝，如果使用长螺丝有可能会损坏机板 ） 8 screws ( 4 length and 4 short, use long screws with back pad, only short screws without back pad, if using long screws may damage the board )
l u 型扣 1 个 1 U -shaped buckle
1 ：确认安装的位置。 Step 1 : Confirm the installation location.
2 ：用 U 型扣将收费机固定在相应的铁柱或扶手上，如下图所示。 Step 2 : Use the U -shaped buckle to fix the toll collection machine on the corresponding iron pillar or handrail, as shown in the figure below.
There are two installation methods:
l B 所示，用短螺丝。 Without back pad, as shown in Figure B above, use short screws.
l A 所示，用长螺丝。 Add the back pad, as shown in Figure A above, with a long screw.
l C 所示 Installation effect diagram (with back pad), as shown in Figure C above
Note: Please use screws when no back pad is added. Because the long screws are too long, they will push against the motherboard inside and cause a short circuit.