What kind of device is to the left of the monitor?
The device is a speaker.
    src        edge_attr  dst
0     0  to the right of   11
1     0   to the left of    7
2     0  to the right of    9
3     1   to the left of    8
4     1  to the right of   14
..  ...              ...  ...
67   14  to the right of   11
68   14   to the left of    1
69   14   to the left of    7
70   14   to the left of    8
71   15   to the left of   14

[72 rows x 3 columns]