Compare Detail
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ROG MAXIMUS XII EXTREME
90MB12J0-M0EAY0ModelPRIME B550-PLUS
90MB14U0-M0EAY0 -
8 ChannelsAudio channels7.1 Channels
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ROG SupremeFX High Definition Audio CODEC S1220Audio chipsetRealtek ALC887
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1 x USB 3.2 Gen 2x2 port(s) (1 x USB Type-C)
3 x USB 3.2 Gen 2 port(s) (2 x Type-A + 1 x USB Type-C)
6 x USB 3.2 Gen 1 port(s) (6 x Type-A)
2 x USB 2.0 port(s) (2 x Type-A)
1 x ASUS Wi-Fi Module
1 x Intel I225-V Ethernet port
1 x Marvell AQtion AQC107 10Gb Ethernet port
5 x LED-illuminated audio jacks
1 x Optical S/PDIF out port
1 x BIOS FlashBack button
1 x Clear CMOS buttonBack io ports2 x USB 3.2 Gen 2 ports (1 x Type-A + 1 x USB Type-C)
4 x USB 3.2 Gen 1 ports (4 x Type-A)
2 x USB 2.0 ports (2 x Type-A)
1 x DisplayPort
1 x HDMI port
1 x Realtek 8111H Ethernet port
5 x Audio jacks
1 x Optical S/PDIF out port -
Intel Z490ChipsetAMD B550
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YesCrossfire supportYes
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NoEcc ram supportYes
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EATXForm factorATX
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AQUANTIA AQC107Lan chipsetRealtek RTL8111H
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2242 / 2260 / 2280 - M Key
2242 / 2260 / 2280 - M Key
2242 / 2260 / 2280 / 22110 - M Key
2242 / 2260 / 2280 / 22110 - M KeyM2 devices support2242 / 2260 / 2280 / 22110 - M Key
2242 / 2260 / 2280 / 22110 - M Key -
4M2 ports2
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10Gbps + 10/100/1000/2500MbpsMax lan speed10/100/1000Mbps
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128 GBMaximum supported ram128 GB
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2Onboard usb 202
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2Onboard usb 32 gen 11
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2Onboard usb 32 gen 20
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2Pci express x16 slots2
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0Pci express x1 slots3
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1Pci express x4 slots0
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YesRaid supportYes
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4Ram slots4
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May 2020Release dateJune 2020
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8Sata 6 gbps ports6
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ROGSeries
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YesSli supportNo
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LGA1200SocketAM4
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2133Mhz
2400Mhz
2666Mhz
2800Mhz
2933Mhz
3000Mhz
3200Mhz
3333Mhz
3400Mhz
3466Mhz
3600Mhz
3733Mhz
3866Mhz
4000Mhz
4133Mhz
4266Mhz
4400Mhz
4500Mhz
4600Mhz
4700Mhz
4800MhzSupported memory2133Mhz
2400Mhz
2666Mhz
2800Mhz
3000Mhz
3200Mhz
3333Mhz
3466Mhz
3600Mhz
3733Mhz
3866Mhz
4000Mhz
4133Mhz
4266Mhz
4400Mhz
4600Mhz -
6Wi fi generation
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YesWireless lanNo
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