What the white device is called?
The device is a keyboard.
    src        edge_attr  dst
0     0   to the left of    3
1     1   to the left of    9
2     2   to the left of    4
3     2   to the left of    6
4     2  to the right of    7
5     3  to the right of    7
6     3  to the right of    0
7     4  to the right of    7
8     4  to the right of    2
9     6  to the right of    7
10    6  to the right of    2
11    7   to the left of    2
12    7   to the left of    6
13    7   to the left of    4
14    7   to the left of    3
15    8         lying on    7
16    8             near    9
17    9          next to    8
18    9  to the right of    1