ASUS PRO B550M-C/CSM AMD AM4 (Ryzen 5000 & 3000) (90MB15Q0-M0AAYC) microATX commercial motherboard (PCIe 4.0, ECC memory, 1Gb LAN, TPM IC onboard, Dual DP, LPC debug header, Self-Recover BIOS, Event Log, ASUS Control Center Express). Powered by AMD Ryzen 5000 and 3000 series processors, the ASUS PRO B550M-C/CSM feature with TCO-optimized solution, including ASUS Shield, ASUS Reliant, ASUS Management Suite. ASUS Commercial BIOS kit to make customization faster and more efficient. ASUS Corporate Stable Model complimentary advance replacement, and a guaranteed long product life cycle for reliable sourcing and support. AMD AM4 Socket and PCIe 4.0: The perfect pairing for AMD Ryzen 5000 and 3000 series CPUs, Fast Connectivity: TPM IC onboard, 1Gb LAN, USB 3.2 Gen 2 Type-C & Type-A ports, a front panel USB 3.2 Gen 1 connector, plus HDMI 2.1, and dual DP ports, Security & Reliability & Manageability: ASUS Self-Recover BIOS, Secure Boot, ASUS Trouble shooting solution, ASUS Event Log, and Commercial BIOS Kit, ASUS Control Center Express (ACCE) to make IT endpoint management simpler, TCO-optimized solution: including ASUS Shield, ASUS Reliant, ASUS Management Suite. ASUS Commercial BIOS kit to make customization faster and more efficient. ASUS CSM motherboard: ASUS Corporate Stable Model with up to 36-month supply, EOL notice, and ECN control.