What kind of device is not off?
The device is a computer mouse.
    src        edge_attr  dst
0     0   to the left of    9
1     0   to the left of    8
2     0  to the right of    4
3     0  to the right of    1
4     1   to the left of    6
5     1   to the left of    0
6     4   to the left of    0
7     4   to the left of   10
8     6  to the right of    1
9     6   to the left of    9
10    8        on top of    7
11    8  to the right of   10
12    8  to the right of    0
13    9  to the right of    0
14    9               on    7
15    9        on top of    7
16    9  to the right of    6
17   10  to the right of    4
18   10   to the left of    8