Rulkiewicz,
I have the same cabinet. There are actually two brackets. There is one that holds in the glass, this is the one that DeLuSioNal29 posted pictures of. The glass slides up into the cabinet and then rests on the little ledge at the bottom. The bracket is L shaped and has 3 holes in it. The bracket goes at the bottom and covers over the glass to keep it in place. I did not have this bracket when I got my cabinet and just got a piece of L shaped bracket the same size at Home Depot. Cut it to length and dilled 3 holes in it to make it work with the existing holes.
The bracket that you show in the picture attaches to the control panel and is more like an S bracket. It attaches to the underside of the control panel, goes up the back, then angles out to fit against the glass. I do not know if this is meant to hold the glass in place as much as it is just to stop stuff from sliding down between the glass and the control panel.
I would recommend getting or making both and especially the L bracket one. If you do not have it and you have the control panel lifted up then the glass is not really secured and only rests on a tiny ledge.
I am traveling for work so I can't take pictures this week, but if you need me to I can once I am at home.