A rather unique find, this is a system level testing board used by AMD in 2019. It appears to be designed to test the rejected PlayStation 5 APU's. Sadly our board is damaged, missing a bios, and ram along with it's mount for the test APU chips.
This board was kindly donated to ObscureGamers by Bringus Studios, and in turn to passed onto VGPM.
The following item is a prototype PlayStation 5 motherboard, this version which is EDM-BR10 wasn't released to the public.
EDM-BR10 appears to be the diskless motherboard, another such board named EDM-AR10 exists, which appears to be the disk based version.
Our board appears to be a reject, and was as such disposed off in e-waste, it then suffered from water damage along with damage to the motherboard rendering it unrepairable at this time.
The EDM-BR10 board still retains a PVT (Product Validation Testing) WiFi chip.