ASUS RS521A‑E12‑RS12U AMD EPYC 9005 Single‑Socket 2U Rack Server with 24 DIMM DDR5

🔥 High‑Performance AMD EPYC 9005 Server Platform delivering exceptional compute density for modern enterprise, AI, and virtualization workloads.

🚀 Next‑Gen PCIe 5.0 Architecture designed for high‑bandwidth accelerators, storage expansion, and performance‑intensive applications.

💾 Supports Up to 12 NVMe All‑Flash Drives, enabling ultra‑fast data throughput and optimized storage scalability for mission‑critical environments.

⚡ 24 DDR5 DIMM Slots offering high‑speed memory performance up to 5200 MHz for superior workload handling.

🌐 Advanced OCP 3.0 Networking Module ensures flexible, high‑speed connectivity with modular networking options.

🛡️ ASMB11‑iKVM Remote Management enables secure, real‑time monitoring and full IT control with enterprise‑grade reliability.

Specification	Details
Processor / System Bus	1 × Socket SP5 (LGA 6096) • Supports 5th & 4th Gen AMD EPYC Processors • AMD EPYC 9005/9004 Series (Air‑cooled up to 400W)
Memory (9005 Series)	24 × DIMM slots • DDR5 6400/5600 RDIMM / 3DS RDIMM • Max 3,072GB • 2DPC(1 of 2): up to 5200 • 2DPC(2 of 2, 1R+1R): up to 4400 • 2DPC(2 of 2, 2R+2R): up to 4000
Memory (9004 Series)	DDR5 4800 RDIMM / 3DS RDIMM • Max 3,072GB • 2DPC(1 of 2): up to 4800 • 2DPC(2 of 2, 1R+1R): up to 4000 • 2DPC(2 of 2, 2R+2R): up to 3600
Expansion Slots	Up to 5 × PCIe Gen5 slots + 1 × OCP 3.0 • 2 × PCIe Gen5 x16 FHFL or 4 × PCIe Gen5 x8 FHFL • 1 × PCIe Gen5 x8 LP • 1 × OCP 3.0 (PCIe Gen5 x16)
Storage Controller	CPU Integrated
Optional Controllers	Broadcom MegaRAID 9560‑16i • ASUS PIKE II 3008‑8i SAS 12G HBA
Drive Bays (Front)	12 × 3.5" hot‑swap bays supporting NVMe/SAS/SATA
Drive Bays (Rear)	2 × 2.5" SATA hot‑swap bays
M.2 Slots	2 × M.2 connectors
Networking	1 × Dual‑Port Intel I350‑AM2 GbE LAN • 1 × Management Port
Graphics / GPU Support	Up to 4 single‑slot or 2 double‑slot GPU cards
Front I/O	2 × USB 3.2 Gen1
Rear I/O	2 × USB 3.2 Gen1 • 1 × VGA • 1 × Mgmt Port • 2 × 1GbE LAN
Front Switch/LEDs	Power, Reset, Location, HDD LED, Message LED, LAN LEDs
Rear Switch/LEDs	Port80 (Q‑Code), Power, Location, Message LED
OS Support	Latest OS support available on ASUS support site
Management	ASUS Control Center • ASUS ASMB11‑iKVM (On‑board)
Regulatory Compliance	CB, CE, RCM, FCC(Class A), ENERGY STAR®
Dimensions	840 × 449 × 88.1 mm (2U)
Form Factor	2U Rackmount
Weight	Net: 17.95 kg • Gross: 25.14 kg
Power Supply	1+1 Redundant 2000W / 1600W 80 PLUS Titanium
Environment	Operating: 10°C–35°C • Storage: –40°C–70°C • Humidity: 20%–90%
Optional Items	Tool‑less Rail Kit • Ball‑Bearing Rail Kit • 2U Front Bezel
Country of Origin	Taiwan
Warranty	3 Years