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There are two PCI-E 16x slots on ASRock B450M Pro4 motherboard. Which one is PCI-E 16x 3.0 and which one is PCI-E 16x 2.0 slot? - Quora
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ASRock B650 PG LIGHTING AM5 ATX Mainboard , 4 slots DDR5, PCIE 4.0 x16, 3 M.2 slots, 2.5Gb Lan, 7.1 Nahimic Audio , Rear USB3.2 Gen2X2 Type_C , 14+2+1 Power Phase, AMD CrossFire. - Walmart.com
There are two PCI-E 16x slots on ASRock B450M Pro4 motherboard. Which one is PCI-E 16x 3.0 and which one is PCI-E 16x 2.0 slot? - Quora
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NeweggBusiness - ASRock B450M PRO4 R2.0 AM4 AMD Promontory B450 SATA 6Gb/s Micro ATX AMD Motherboard
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