2 x Socket P (LGA 3647), Intel PCH C621, Intel 621, max 2048GB LRDIMM, NVMe, 1U

Top performance in industry-standard SPEC benchmarks
RS500-E9-RS4-U supports two of the latest Intel® Xeon® Scalable Family processors, which feature up to 56 cores and 112 threads and operate at a maximum of 205W for leading performance. It also has 16 memory slots that fit up to 2TB of DDR4 2666 for memory-intensive computing.

Flexible expansion for better storage and networking
RS500-E9-RS4-U features one PCIe x16 and one PCIe x8 slots to deliver parallel computing power and one OCP 2.0 Mezzanine connector to support high-speed LAN card. This flexibility supports diverse storage and networking applications and ensures future expandability and high scalability in a 1U server.

RS500-E9-RS4-U fits four 3.5-inch hot-swappable bays with choice of 32Gbps NVMe SSDs, 12Gbps SAS or 6Gbps SATA drives. Two M.2 slots accommodate 22110-size SSDs with support for additional OS storage and PCIe Gen3 x4 bandwidth — 5.3X faster than 6 Gb/s SATA III — for faster boot speeds.

Exclusive Thermal Radar technology for energy efficiency
RS500-E9-RS4-U features ASUS-exclusive Thermal Radar technology with ambient sensors placed in CPU, memory, NVMe, SSD, OCP mezzanine connector for internal and external temperature monitoring, and dynamic fan-curve adjustment, which lowers fan power consumption by up to 20% and reduces total cost of ownership — ideal for data centres with extreme workloads.

Exclusive Performance Boost technology
ASUS features exclusive Performance Boost technology to achieve peak server performance and agility by tuning servers to match the requirements of workloads, letting you gain greater control of your server environment. This technology improves workload throughput by maximising processor frequency and boost power, ideal for time-sensitive applications such as financial services or data centre operations.

Redundant Platinum PSU support
RS500-E9-RS4-U supports redundant 770W 80 Plus Platinum and 450W 80 Plus Gold power supplies, which are 96%+ efficient, directly reducing operating costs and capital expenses. The 1+1 power-supply design allows the server to keep working even if one power supply requires maintenance, enabling uninterrupted operation.

Comprehensive IT infrastructure management
RS500-E9-RS4-U features an embedded iKVM module and is bundled with ASUS Control Centre to provide comprehensive out-of-band and in-band management features for small and mid-size businesses.

The embedded ASMB9-iKVM module supports remote BIOS updates, fan control, standalone KVMs, video recording, and BSOD capture, providing around-the-clock remote monitoring and diagnostics — even if the operating system is down or offline — through a user-friendly, web-based graphical interface that works with all major browsers.

ASUS Control Centre (ACC) is a centralised and integrated IT management platform for monitoring and controlling ASUS commercial products, including servers, workstations and digital signage. ACC enables remote BIOS updates, monitoring of multiple systems via mobile devices, and one-click software updates and dispatching, allowing easier server management for any IT infrastructure.