User guide

Translation:
"Class B" Equipment (Household purpose info/telecommunications equipment)
As this equipment has undergone EMC registration for household purpose, this
product can be used in any area including residential area.
KN22 and KN24
7.3.7 BSMI Certification Information (Taiwan)
Class A
Translation:
This is a Class A Information Product, when used in residential environment, it may
cause radio frequency interference, under such circumstances, the user may be
requested to take appropriate countermeasures.
CNS13438
Class B
CNS13438
30 Reference
AMD Radeon™ HD 7850/7870 Graphics © 2012 Advanced Micro Devices, Inc.