here!
I’m your shopping assistant for PC builds, upgrades, and everything tech.
Got questions? Ask away!
Start a conversation
AsRock Rack B550D4-4L ATX Server Motherboard AMD Ryzen 5000 Series AM4 (PGA 1331) B550
- ATX (12"x 9.6")
- Support AMD Ryzen 5000 Series Desktop Processors
- Support 4 x DIMM slots, DDR4 288-pin ECC*/non-ECC UDIMM
- Support 1 x PCIe 4.0 x16 + 1 x PCIe 4.0 x4
- Support 6 x SATA 6Gb/s
- Support 1 x M.2 (PCIe3.0x4 or SATA 6Gb/s); support 22110/2280/2242 form factor
- Support 4 x RJ45 (1GbE) Intel® i210 + 1 x dedicated IPMI
- Support 1 x HDMI
+
+
Specs
Reviews (1)
See all Q & A 
Any questions? Ask CelesteSM will help you find out quickly.
Try me now
Learn more about the ASRock Rack B550D4-4L
| Brand | AsRock Rack |
|---|---|
| Model | B550D4-4L |
| CPU Socket Type | Socket AM4 |
|---|---|
| CPU Type | Supports: AMD Ryzen 5000 and 4000 G-Series Desktop Processors with Radeon Graphics AMD Ryzen 5000 and 3000 Series Desktop Processors AMD Ryzen PRO 5000, 4000 and 3000* Series Desktop Processors * Not compatible with AMD Ryzen PRO 3000 Series Desktop Processors with Radeon Graphics |
| Number of DDR4 Slots | 4 x 288-pin |
|---|---|
| DDR4 Standard | DDR4 3200 |
| ECC Supported | Yes |
| PCI Express 4.0 x16 | SLOT6: PCIe x16 (PCIe4.0 x16) [CPU] |
|---|---|
| PCI Express x8 | SLOT4: PCIe x8 (PCIe4.0 x4) [CPU] |
| SATA | 6 x SATA 6.0Gb/s |
|---|---|
| SATA RAID | 0/1/10 |
| M.2 | 1 M-key (PCIe3.0 x4 or SATA 6Gb/s); support 22110/2280/2242 form factor [FCH] |
| Onboard Video Chipset | Aspeed AST2500 |
|---|
| LAN Chipset | 4 Intel i210: 4 RJ45 (1GbE) |
|---|---|
| Max LAN Speed | 1Gbps |
| Back I/O Ports | HDMI: 1 VGA Port: 1 DB15 USB 3.2 Gen1 Port: 2 Type-A (USB3.2 Gen1) USB 3.2 Gen2 Port: 2 Type-A (USB3.2 Gen2) Lan Port: 4 RJ45 (1GbE) Dedicate LAN: 1 dedicated IPMI Serial Port: 1 DB9 UID Button/UID LED: 1 UID button, 1 UID LED |
|---|
| Other Connectors | COM Header: 1 Front Lan LED Connector: 1 for LAN3/LAN4 Auxiliary Panel Header: 1 (18-pin): chassis intrusion, system fault LED, LAN1/LAN2 activity LED, locate, SMBus TPM Header: 1 (17-pin, LPC), 1 (13-pin, SPI) Thermal Sensor Header: 1 IPMB Header: 1 VGA Header: 1 PMBus CONN: 1 Buzzer: 1 Fan Header: 6 (6-pin) USB 3.2 (Gen1) Header: 1 (19-pin, 2 USB3.2 Gen1) USB 2.0 Header: 1 (9-pin, 2 USB2.0) Type A USB 3.2 (Gen1) Port: 1 (Type-A, 1 USB3.2 Gen1) System Panel: 1 (9-pin): power switch, reset switch, system power LED, HDD activity LED Speaker Header: 1 BMC_SMB Header: 1 Power Connector: 1 (24-pin, ATX main power), 1 (8-pin, ATX 12V), 1 (4-pin, ATX 12V) Clear CMOS: 1 (contact pads) |
|---|
| Form Factor | ATX |
|---|---|
| Dimensions (W x L) | 12.0" x 9.6" |
| First Listed on Newegg | January 19, 2022 |
|---|
Warranty & Returns
Warranty, Returns, And Additional Information
Warranty
- Limited Warranty period (parts): 3 years
- Limited Warranty period (labor): 3 years
- Read full details
Return Policies
- Return for refund until: January 31, 2027
- Return for replacement until: January 31, 2027
- This item is covered by Newegg.com's Extended Holiday Return Policy.
- Read full return policy for details.
We want to ensure your holiday shopping this year is hassle-free. That’s why we’re automatically extending our return policies on almost every product! For purchases placed between November 1st, 2026 and December 31, 2026 you will have until January 31, 2027 to return your product.
Manufacturer Contact Info
- Manufacturer Product Page
- Manufacturer Website
- Support Phone: 909-590-8308
- Support Website
- View other products from ASRock Rack
LOADING...
The ASRock Rack B550D4-4L is an ATX server motherboard for supported AMD Ryzen AM4 desktop processors, suited to home labs, small servers, and systems that benefit from ECC UDIMM support, four 1GbE ports, and dedicated IPMI management.
Recommended For
- Homelab operators running a Ryzen server or virtualization host who want out-of-band IPMI management to monitor or control a headless system remotely.
- DIY NAS or small-server builders who plan to connect several SATA drives and want four onboard 1GbE ports, with a PCIe slot available for an add-in card if needed.
- Builders reusing a compatible AM4 Ryzen processor for a server or workstation who value remote management and are willing to verify ECC support for their specific CPU and memory combination.
- Small-server builders who need onboard display and serial connectivity for setup or maintenance without adding a separate graphics card.
Spec Summary
| Attribute | Value |
|---|---|
| Best For | Ryzen-based server or desktop builds needing ECC-capable memory, multiple Gigabit Ethernet ports, and dedicated IPMI management |
| Processor And Platform | Socket AM4 with AMD B550 chipset; supports Ryzen 5000 and 3000 desktop processors, Ryzen 5000 and 4000 G-Series processors with Radeon Graphics, and Ryzen PRO 5000, 4000, and 3000 series processors, except Ryzen PRO 3000 processors with Radeon Graphics |
| Memory Configuration | Four DDR4 288-pin slots, supporting DDR4-3200 and ECC memory |
| Expansion Slots | One PCIe 4.0 x16 slot and one x8-length PCIe 4.0 slot operating at x4 |
| Storage And RAID | Six SATA 6.0Gb/s ports with RAID 0, 1, and 10 support, plus one M-key M.2 slot supporting PCIe 3.0 x4 or SATA 6Gb/s drives in 22110, 2280, or 2242 form factors |
| Networking And Management | Four Intel i210 Gigabit Ethernet ports with 1Gbps maximum speed, plus a dedicated IPMI LAN port |
| Video And Rear I/O | HDMI and VGA outputs; two USB 3.2 Gen 1 Type-A and two USB 3.2 Gen 2 Type-A rear ports, plus one DB9 serial port and a UID button and LED |
| Internal Headers And Connectors | Includes USB 3.2 Gen 1 and USB 2.0 headers, COM and VGA headers, TPM headers, six fan headers, and system panel, auxiliary panel, IPMB, PMBus, BMC_SMB, thermal sensor, speaker, buzzer, and front LAN LED connectors |
| Power And Board Format | ATX board measuring 12.0 × 9.6 inches, with 24-pin main ATX, 8-pin ATX 12V, and 4-pin ATX 12V power connectors |
| Model Identifiers | ASRock Rack B550D4-4L |