Compare Detail

• B450M STEEL LEGEND
  90-MXB9Y0-A0UAYZ
  Model
  B550M STEEL LEGEND
  90-MXBCU0-A0UAYZ
• 7.1 Channels
  Audio channels
  7.1 Channels
• Realtek ALC892
  Audio chipset
  Realtek ALC1200
• 1 x PS/2 Mouse/Keyboard Port
  1 x HDMI Port
  1 x DisplayPort 1.2
  1 x Optical SPDIF Out Port
  2 x USB 2.0 Ports (Supports ESD Protection)
  1 x USB 3.2 Gen2 Type-A Port (10Gb/s) (Supports ESD Protection)
  1 x USB 3.2 Gen2 Type-C Port (10Gb/s) (Supports ESD Protection)
  4 x USB 3.2 Gen1 Ports (Supports ESD Protection)
  1 x RJ-45 LAN Port with LED (ACT/LINK LED and SPEED LED)
  HD Audio Jacks: Rear Speaker / Central / Bass / Line in / Front Speaker / Microphone (Gold Audio Jacks)
  Back io ports
  2 x Antenna Ports (on I/O Panel Shield)
  1 x PS/2 Mouse/Keyboard Port
  1 x HDMI Port
  1 x DisplayPort 1.4
  1 x Optical SPDIF Out Port
  1 x USB 3.2 Gen2 Type-A Port (10Gb/s) (Supports ESD Protection)
  1 x USB 3.2 Gen2 Type-C Port (10Gb/s) (Supports ESD Protection)
  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)
  1 x Clear CMOS Button
  HD Audio Jacks: Rear Speaker / Central / Bass / Line in / Front Speaker / Microphone (Gold Audio Jacks)
• AMD B450
  Chipset
  AMD B550
• Yes
  Crossfire support
  Yes
• No
  Ecc ram support
  Yes
• Micro ATX
  Form factor
  Micro ATX
• Realtek RTL8111H
  Lan chipset
  Dragon RTL8125BG
• 2242 / 2260 / 2280 - M Key
  2242 / 2260 / 2280 - M Key
  M2 devices support
  2280 - M Key
  2280 - M Key
  2230 - E Key
• 2
  M2 ports
  3
• 10/100/1000Mbps
  Max lan speed
  10/100/1000/2500Mbps
• 128 GB
  Maximum supported ram
  128GB
• 2
  Onboard usb 20
  2
• 1
  Onboard usb 32 gen 1
  2
• 2
  Pci express x16 slots
  2
• 1
  Pci express x1 slots
  1
• Yes
  Raid support
  Yes
• 4
  Ram slots
  4
• February 2019
  Release date
  June 2020
• 4
  Sata 6 gbps ports
  6
• No
  Sli support
  No
• AM4
  Socket
  AM4
• 2133Mhz
  2400Mhz
  2666Mhz
  2933Mhz
  3200Mhz
  Supported memory
  2133Mhz
  2400Mhz
  2666Mhz
  2933Mhz
  3200Mhz
  3466Mhz
  3600Mhz
  3733Mhz
  3800Mhz
  3866Mhz
  4000Mhz
  4133Mhz
  4200Mhz
  4266Mhz
  4333Mhz
  4400Mhz
  4533Mhz
• No
  Wireless lan
  No