Cisco 521 Manual page 14

B
2
A
3
B
2
A
4
3
1
Keyhole clip
2 Screw holes (A, B, C)
3
Screw hole (X)
4
Location for cable access hole
14
1
B
C C
A
X
B
C
C
A
X
6
1
7
2
5
2
5
T-bar hanger clip hole
6 Security screw hole
7
Padlock hole
OL-16715-01