Which kind of device is white?
The device is a controller.
    src        edge_attr  dst
0     0  to the right of    2
1     0  to the right of    9
2     0  to the right of    1
3     1  to the right of   10
4     1  to the right of    5
5     1   to the left of    6
6     1   to the left of    0
7     1  to the right of    9
8     1  to the right of    4
9     2   to the left of    0
10    2   to the left of    6
11    3  to the right of    5
12    4   to the left of    1
13    5   to the left of    3
14    5   to the left of    1
15    6  to the right of    9
16    6  to the right of    2
17    6  to the right of    1
18    6        on top of    2
19    9   to the left of    6
20    9   to the left of    0
21    9   to the left of    1
22   10   to the left of    1