From the box, find the JB-199 mini II karaoke player.

Depending on the shipment, the JB-199 mini II karaoke player may already have USB dongles connected.
Remove the dongles and set them aside for now as they will be reconnected later.
The JB-199 mini II player would also have two protruding screws at the bottom as shown in the picture.

Connection
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Attach the JB-199 mini II karaoke player on the back of the touch screen monitor, onto the back plate of the JB-199 mini II.

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There are four cables (AC Power plug, 3.5mm jack, USB-A, and DC power plug) at the top of the kiosk as shown in the picture.

Connect the AC power plug to the touch screen monitor and 3.5mm jack to the karaoke player as shonw in the picture.

Connect the USB-A and DC power plug to the karaoke player as shonw in the picture.

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Next using an enclosed short HDMI cable, connect the touch screen monitor to the karaoke player as shown.

Using an enclosed short USB cable, connect the USB-B end of the cable to the touch screen monitor and USB-A end of the cable to the karaoke player.

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Two more cables that you may consider connecting are a LAN cable for a network router and a HDMI cable for an external TV.

Connect as shown the LAN cable for a network router.

Although both Wi-Fi and LAN connections are available in the JB-199 mini II karaoke player, the LAN connection is recommended for a faster and more reliable connection.
Connect as shown the HDMI cable for an external TV.

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Lastly the USB dongles must be connected to the JB-199 mini II karaoke player as shown.

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The Red dongle must be connected at all times. It is a security lock for the karaoke player.

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The black dongle is for the remote controller.

Note that there are two remote controllers enclosed and they communicate to their own dongles only.
For the black dongle that was previously connected to the JB-199 mini II karaoke player, you must look for the remote controller that has its black dongle removed from its box.
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There is also a blue dongle with a flap which is for the wireless mouse and keyboard.

Since there is no more USB port on the JB-199 mini II, a USB hub or a USB-C adapter is needed to connect it.
It can also be connected instead of the black dongle of the remote controller if you prefer to use the wireless mouse & keyboard.