For sale is my MSI B550-A PRO motherboard. It boots and runs Windows, but it has a number of cosmetic damages. The top PCI-E slot has a damaged metal shielding, but will still run video cards at a full 4.0 x16 data rate. One of the RAM slots has a damaged end, but will still work fine so long as the RAM stick is properly aligned and installed. The chipset heatsink is missing, but it did not get hot during testing and remained barely warm to the touch. BIOS has been updated to the latest available as of August 2026. Comes with pre-installed M.2 screws, and an aftermarket I/O shield. Does not come with retail box or any other accessories not pictured.
This motherboard was shipped as part of a prebuilt computer at some point, so any damage or symptoms may be related to damage during shipping. It was also in storage for a long period of time. You will receive the exact motherboard that is pictured, so make sure to check all of the photos closely for actual physical condition.Your purchase comes with everything pictured. You are only buying what is pictured, and nothing else. If a cable or something else is not pictured, it is not included!SHIPPING AND PURCHASE TERMSIdo combined shipping discounts! Multiple quantity listings already have automatic shipping discounts included, but multiple items from different listings do not. If you want to purchase from multiple listings from me and you need a shipping adjustment, please contact me and an adjustment will be made after purchase. Shipping discounts on additional items beyond the first item vary, but expect modest to significant savings depending on factors like size, weight, and distance for the package(s). Multiple listing combined shipping discounts are not automatic and must be requested.
Due to increasing amounts of fraudulent buyers using freight forwarders, buyers suspected to be using a freight forwarder will be scrutinized for fraudulent activity, and will require an admission in messages that a freight forwarder is being used for that order. I reserve the right to cancel and refund orders using freight forwarders in order to protect myself from potential fraud.Item serial number will be recorded if present.Signature confirmation will be required on all sales of $750 or more.International buyers READ THIS: International shipping for most countries will be handled by international shipping services. Otherwise it will be shipped with an appropriate USPS, UPS, or FedEx service. Keep in mind, I cannot change customs value of the item and I cannot mark it as gift. Import duties, taxes, and charges aren't included in the item price or postage cost for items not shipped with international shipping. These charges are the buyer's responsibility. Please check with your country's customs office to determine what these additional costs will be prior to offerding or buying.___
Learn more about the MSI B550-A PROModelBrandMSISeriesPROModelB550-A PROSupported CPUCPU Socket TypeAM4CPU TypeSupports AMD Ryzen 5000 Series / 4000 G-Series / 3000 Series processors ** Not compatible with AMD Ryzen 5 3400G & Ryzen 3 3200G.ChipsetsChipsetAMD B550MemoryNumber of Memory Slots4x288pin (DDR4)Memory StandardDDR4 4400+ / 4266 / 4133 / 4000 / 3866 / 3733 / 3600 / 3466 / 3200 / 3066 / 3000 / 2933 / 2800 / 2667 by A-XMP OC MODE
DDR4 3200 / 3066 / 3000 / 2933 / 2800 / 2667 / 2400 / 2133 / 1866 by JEDEC1DPC 1R Max speed 4800
1DPC 2R max speed 3866
2DPC 1R max speed 4000
2DPC 2R max speed 3600Maximum Memory Supported128GBChannel SupportedDual ChannelECC SupportedNon-ECCBuffer SupportedUn-bufferedExpansion SlotsPCI Express 4.0 x161 x PCI Express 4.0 x16** Actual support may vary by CPU.PCI Express 3.0 x161 x PCI Express 3.0 x16** Supports x4 speed.
* When installing PCIe SSD in M.2_2, PCI_E3 slot will be unavailable.PCI Express x161 x PCI Express x16PCI Express x12 x PCIe 3.0 x1Storage DevicesSerial ATA (SATA)6 x SATA 6Gb/sM.22 x M.2 slots (Key M):M2_1 slot (from AMD Processor):
Supports PCIe 4.0/3.0 x4 *
Supports SATA 6Gb/s
Supports 2242/2260/2280/22110 storage devicesM2_2 slot (from AMD B550 chipset):
Supports PCIe 3.0 x4
Supports 2242/2260/2280 storage devices* The supported specification depends on installed processor.SATA RAID0/1/10Onboard VideoOnboard Video ChipsetSupported only by CPU with integrated graphicOnboard AudioAudio ChipsetRealtek ALC892/ALC897Audio Channels7.1 ChannelsOnboard LANLAN ChipsetRealtek RTL8111HMax LAN Speed1GbpsRear Panel PortsBack I/O 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
Flash BIOS ButtonUSB 3.04 x USB 3.0Internal I/O ConnectorsOnboard USB1 x USB 3.2 Gen 1 5Gbps Type-C port
1 x USB 3.2 Gen 1 5Gbps connector (supports additional 2 USB 3.2 Gen 1 5Gbps ports)
2 x USB 2.0 connectors (supports additional 4 USB 2.0 ports)Other Connectors1 x 4-pin CPU fan connector
1 x 4-pin water-pump fan connector
6 x 4-pin system fan connectors
1 x Front panel audio connector
2 x System panel connectors
1 x Chassis Intrusion connector
1 x 4-pin RGB LED connector
2 x 3-pin RAINBOW LED connectors
1 x TPM module connector
1 x Clear CMOS jumperPhysical SpecForm FactorATXLED LightingRGBDimensions (W x L)12.0" x 9.6"Power Pin1 x 24-pin ATX main power connector
1 x 8-pin ATX 12V power connectorSoftware FeatureWindows 11SupportedFeaturesFeaturesSupports AMD Ryzen 5000 & 3000 Series desktop processors (not compatible with AMD Ryzen 5 3400G & Ryzen 3 3200G) and AMD Ryzen 4000 G-Series desktop processorsSupports DDR4 Memory, up to 4400(OC) MHzLightning Fast Experience: PCIe 4.0, Lightning Gen4 x4 M.2 with M.2 Shield Frozr, AMD Turbo USB 3.2 Gen 2Premium Thermal Solution: Extended Heatsink Design with additional choke thermal pad and 7W/mK pad, and M.2 Shield Frozr are built for high performance system and non-stop worksPowerful Design: Core Boost, Digital PWM IC, 2oz Thickened Copper PCB, Creator Genie, DDR4 BoostAudio Boost: Reward your ears with studio grade sound qualityMulti-GPU: With Steel armor PCI-E slots. Supports 2-Way AMD CrossfireDragon Center: A brand new software which integrates all MSI exclusive tools with user friendly user interface___