I tried to connect 1 rx 470 with riser to the pcie x 16 slot but it pulls up integrated graphic radeon r3. In the bios I set primary video device to pcie video, but it still pulls up the r3 graphics. I also tried 1 rx 570 but had the same results.

The ASUS AM1M-A mb has a sephron ami apu.

Any ideas on how to get this board to recognize the gpu.

Just wondering if you can set up the ASUS AM1M-A mb w/sepron apu to mine with 3 gpu's. It has R3 radeon graphics in the processor.
I tried to connect one rx 470 with a riser to pci express 2.0 x 16 but it wont pickup the gpu. I set the primary video device to pcie, but still picked up r3 graphics.
Also tried with a rx 570 but same results.

They told me "they can't provide phone call support" only e-mail or live chat when I asked for them to call me do to an order not being shipped. Terrible service! Would not recommend to anyone. I ordered Mar.13/17 and got my stuff Apr. 3/17. Correction some of my stuff. Still waiting for 2 items.