Compare Detail
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B450M-HDV R4.0
90-MXB9N0-A0UAYZModelB550-A PRO
7C56-002R -
7.1 ChannelsAudio channels7.1 Channels
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Realtek ALC887Audio chipsetRealtek ALC892
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1 x PS/2 Mouse/Keyboard Port
1 x D-Sub Port
1 x DVI-D Port
1 x HDMI Port
2 x USB 2.0 Ports (Supports ESD Protection)
4 x USB 3.1 Gen1 Ports (Supports ESD Protection)
1 x RJ-45 LAN Port with LED (ACT/LINK LED and SPEED LED)
HD Audio Jacks: Line in / Front Speaker / MicrophoneBack io ports1 x DisplayPort
1 x HDMI
1 x LAN (RJ45)
1 x PS/2 Keyboard/Mouse Combo
1 x USB 3.2 Gen 2 Type-A
1 x USB 3.2 Gen 2 Type-C
2 x USB 3.2 Gen 1 Type-A
4 x USB 2.0/1.1
6 x Audio Jacks -
AMD B450ChipsetAMD B550
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NoCrossfire supportYes
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NoEcc ram supportNo
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Micro ATXForm factorATX
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Realtek RTL8111HLan chipsetRealtek RTL8111H
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2242 / 2260 / 2280 - M KeyM2 devices support2242 / 2260 / 2280 / 22110 - M Key
2242 / 2260 / 2280 - M Key -
1M2 ports2
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10/100/1000MbpsMax lan speed10/100/1000Mbps
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32GBMaximum supported ram128GB
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2Onboard usb 202
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1Onboard usb 32 gen 11
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0Onboard usb 32 gen 21
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1Pci express x16 slots2
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1Pci express x1 slots2
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YesRaid supportYes
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2Ram slots4
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February 2019Release dateJuly 2020
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4Sata 6 gbps ports6
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NoSli supportNo
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AM4SocketAM4
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2133Mhz
2400Mhz
2666Mhz
2933Mhz
3200MhzSupported memory1866Mhz
2133Mhz
2400Mhz
2666Mhz
2800Mhz
2933Mhz
3000Mhz
3200Mhz
3466Mhz
3600Mhz
3733Mhz
3866Mhz
4000Mhz
4133Mhz
4266Mhz
4400Mhz -
NoWireless lanNo
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