Canon XA20 - Manual (Page 17)

Names of Parts
17
1 Tripod socket (A 28)
2 BATTERY RELEASE switch (A 21)
3 Eye cup (A 24)
4 Identification plate
This plate bears the camcorder ID, which is written as "ID00XX" with "XX"
representing a two-digit number.
1
4
2 3
Bottom view
Identification plate
Check here
COP
Y