Compare Detail
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X399 TAICHIModelB550M/AC
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7.1 ChannelsAudio channels7.1 Channels
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Realtek ALC1220Audio chipsetRealtek ALC1200
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2 x Antenna Ports
1 x PS/2 Mouse/Keyboard Port
1 x Optical SPDIF Out Port
1 x USB 3.1 Gen2 Type-A Port (10Gb/s) (Supports ESD Protection)
1 x USB 3.1 Gen2 Type-C Port (10Gb/s) (Supports ESD Protection)
8 x USB 3.1 Gen1 Ports (Supports ESD Protection)*
2 x RJ-45 LAN Ports with LED (ACT/LINK LED and SPEED LED)
1 x BIOS Flashback Switch
HD Audio Jacks: Rear Speaker / Central / Bass / Line in / Front Speaker / Microphone (Gold Audio Jacks)
* Ultra USB Power is supported on USB3_6 port.
* ACPI wake-up function is not supported on USB3_6 port.Back io ports2 x Antenna Ports
1 x PS/2 Mouse/Keyboard Port
1 x HDMI Port
4 x USB 3.2 Gen1 Ports (ASMedia ASM1074 hub) (Supports ESD Protection)
2 x USB 2.0 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 / Microphone -
AMD X399ChipsetAMD B550
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YesCrossfire supportYes
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YesEcc ram supportYes
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ATXForm factorMicro ATX
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Intel i211ATLan chipsetRealtek RTL8111H
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2242 / 2260 / 2280 - M Key
2242 / 2260 / 2280 - M Key
2230 / 2242 / 2260 / 2280 - M Key
2230 - E KeyM2 devices support2280 - M Key -
4M2 ports1
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Dual 10/100/1000MbpsMax lan speed10/100/1000Mbps
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128GBMaximum supported ram128GB
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2Onboard usb 202
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2Onboard usb 32 gen 12
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4Pci express x16 slots2
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1Pci express x1 slots1
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YesRaid supportYes
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8Ram slots4
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February 2018Release dateSeptember 2020
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8Sata 6 gbps ports4
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YesSli supportNo
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sTR4SocketAM4
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2133Mhz
2400Mhz
2666Mhz
2933Mhz
3200Mhz
3600MhzSupported memory2133Mhz
2400Mhz
2666Mhz
2933Mhz
3200Mhz
3466Mhz
3600Mhz
3733Mhz
3800Mhz
3866Mhz
4000Mhz
4133Mhz
4200Mhz
4266Mhz
4333Mhz
4400Mhz
4533Mhz -
5Wi fi generation5
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YesWireless lanYes
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