Key Specifications
Based on official listings and reseller details:
Socket & Chipset: AMD B550 chipset, compatible with Ryzen 3000, 4000 G‑Series, and 5000 Series (with BIOS update for Zen‑3 CPUs such as 5000 series) Reddit+15Computech Store+15Newegg.com+15electrobot.co.in
Memory Support:
2 × DDR4 DIMM slots (dual‑channel)
Up to 64 GB max; supports overclocked speeds up to DDR4‑4600+ (OC) with XMP and ECC/non‑ECC support (processor‑dependent) Newegg.com+5Computech Store+5factorydunia.com+5
Power Design: 6‑phase VRM with Premium 50A power chokes, High‑Density Glass Fabric PCB for moisture resistance, ASRock Super Alloy build nationalpc.in+6Computech Store+6Reddit+6
Expansion Slots:
1 × PCIe 4.0 ×16 (CPU-linked)
1 × PCIe 3.0 ×1 (chipset-linked) Reddit+15Computech Store+15Newegg.com+15
Storage:
4 × SATA III (RAID 0/1/10 support)
1 × Hyper M.2 slot supporting PCIe Gen4 ×4 NVMe SSDs (on Ryzen 3000/5000) or SATA M.2 advanti.com+2Reddit+2factorydunia.com+8Computech Store+8advanti.com+8
Graphics Output: HDMI (4K@60Hz), DVI‑D, D‑Sub—all video only with CPUs having onboard GPU support Newegg.com+4Computech Store+4Newegg.com+4
Audio & LAN: 7.1‑channel Realtek ALC887 audio; Realtek RTL8111H Gigabit Ethernet with Full Spike Protection poscentral.in+6Pangoly+6advanti.com+6
USB & I/O:
Rear: 4 × USB 3.2 Gen1, 2 × USB 2.0
Front headers: USB 3.2 Gen1, USB 2.0 expansion supported Reddit+2advanti.com+2Newegg.com+3Computech Store+3electrobot.co.in+3
Other Features: ASRock Live Update & APP Shop, TPM header, chassis intrusion header, Smart Fan control, solid-capacitor components, support CD included Computech Store+4advanti.com+4Reddit+4
Form Factor: Micro‑ATX (≈ 9.0″ × 7.9″ / 23 × 20.1 cm); includes I/O shield, SATA cables, M.2 screw, support manual mdcomputers.in+2poscentral.in+2
✅ Warranty Coverage (India)
Retailers like Computech Store, MDComputers, and Poscentral advertise a 3‑year warranty for the B550M‑HDV in India Reddit+15electrobot.co.in+15Computech Store+15
ASRock’s official global policy states a 1‑year warranty to authorized distributors, with extended cover provided by local retailers at their discretion—often quoted as 3 years in India Reddit+1