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Construction
Here is all about X-arcade a great controller easy to install,  just connect the X-arcade to the keyboard plug in the computer and the keyboard to the X-arcade.
Its possible the configuration of the X-arcade  keys in many ways but for all the technical
features check this link
of the
X-ARCADE.
   Because of the limited space for the keyboard and  mouse I had to find an  mini keyboard identical
to the ones used in laptops computers.
Cabinet
Software
Hardware
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As in my case the X-arcade controller came with a Playstation adaptor I had to made a solution of an easy
access and removal and reposition of the X-arcade controller.(click  photo below to see bigger)
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I divided the front panel in 2 parts, the top one covers the monitor with a filter glass and lower panel gives an easy access to monitor on screen display button and to the cables that connect the X-arcade, both wood panels
are supported by magnetic locks (see the photo 3 an 4) to remove the X-arcade controller just unplug the cables
and pull up, the controller is not attached to anything just well tight.
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Alternative to the X-arcade controller
The advantage of building the controls
table from scratch is that you can
personalize it at your taste, of course
this is going to be the part that will take
you more time and work of the arcade cabinet.
One of the options is the I-PAC, a board that you connect all the buttons an joysticks, all available in
this link 
ULTIMARC, and all the technical information.