OSS EOS-2U-4A, User Manual, Page: 16 / 54

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OSS-EOS-2U-4A | 16
1.6 Motherboard Features
CPU Supports two 3rd Gen. Intel Xeon Scalable Processors (in Socket P+ LGA 4189) with up to 38 cores per CPU and a
thermal design power (TDP) of up to 270W
Memory Supports up to 4 TB of 3DS LRDIMM/LRDIMM/3DS RDIMM/RDIMM DDR4 (288-pin) ECC memory with speeds of
3200/2933/2666 MHz in 16 memory slots and up to 4 TB of Intel Optane PMem 200 Series with speeds of up to 3200
MHz Note 1: The Intel Optane Persistent Memory (PMem) 200 Series are supported by the 3rd Gen. Intel Xeon
Scalable (83xx/63xx/53xx/4314) series processors. Note 2: Memory speed and capacity support depends on the
processors used in the system.
DIMM Size Up to 256 GB at 1.2V Note: For the latest CPU/memory updates, please refer to our website at
http://www.supermicro.com/products/ motherboard
Chipset Intel PCH C621A
Expansion Slots • One PCIe 4.0 x8 slot (CPU2 Slot11)
• Six PCIe 4.0 x16 slots (CPU1 Slot2 / CPU1 Slot4 / CPU1 Slot9 / CPU2 Slot6 / CPU2 Slot8 / CPU2 Slot10)
• Two PCIe 4.0 x4 M.2 slots (supports M -Key 2242, 2260, 2280, and 22110)
• Two PCIe 4.0 x8 SlimSAS ports w/support of two connections each port (P1_NVME0/1, P1_NVME2/3)
Network • Two 10G Ethernet LAN ports supported by Intel X550 LAN controller
• One Dedicated BMC LAN located on the rear I/O panel (via AST2600 BMC)
Baseboard
Management
Controller (BMC) ASPEED AST2600 BMC
Graphics Graphics controller & VGA support via ASPEED AST2600 BMC
I/O Devices
Serial (COM) Port • One (serial port on the rear I/O panel (COM1)
• One front accessible serial port header (COM2)
SATA 3.0 • Eight I -SATA 3.0 ports at 6 Gb/s (I-SATA0~3, I-SATA4~7)
• Two Intel PCH powered S -SATA 3.0 Ports with support for
SuperDOM (Disk on Module) devices (S-SATA4, S-SATA5)
Video (VGA) Connections • One VGA port on the rear I/O panel (VGA2)
• One VGA heade r on the motherboard for front access (VGA1
Peripheral Devices • Four USB 3.0 ports on the rear I/O panel (USB2/3, USB4/5)
• One front -accessible USB header with support for two USB 2.0 ports (USB0/1)
• One front -accessible USB header with support for two USB 3.0 ports (USB6/7)
• One internal USB 3.0 Type -A header (USB8)
BIOS • AMI BIOS
• ACPI 3.0 or later, PCI firmware 4. 0 support, BIOS rescue hot-key, SPI dual/quad speed support, RTC (Real Time
Clock) wakeup, and SMBIOS 3.0 or later
Power
Management • ACPI power management
• Power button override mechanism
• Power -on mode for AC power recovery
• Wake -on-LAN
• Power s upply monitoring
System Health
Monitoring • Onboard voltage monitoring for +/ -12V, +5V/+5V standby, +3.3V, and +3.3V standby
• Onboard temperature monitoring for CPU, VRM, LAN, PCH, system, and memory
• 7+1 CPU switch phase voltage regulator
• CPU thermal trip support
• Platform Environment Control Interface (PECI)
Fan Control • Fan status monitoring via BMC connections
• Single cooling zone
• Low -noise fan speed control
• Ten 4 -pin fan headers
LED Indicators • Power LED
• UID/remote UID
• LAN activity LED
• BMC Heartbeat LED
Dimensions 15.12" (W) x 13.2" (L) ATX (384.05 mm x 335.28 mm)