IMB550
ATX Motherboard with LGA1851 Socket 15th Gen Intel® Core™ Ultra 9/7/5 Processors, Intel® W880, USB 3.2 Gen 2, SATA 3.0, 2.5GbE LAN, DisplayPort++, and HDMI

Features
- LGA1851 socket Intel® Core™ Ultra 9/7/5 Processors
- 4 288-pin DDR5-5600 ECC/non-ECC unbuffered Long-DIMM, up to 192GB
- Supports DisplayPort++ and HDMI
- Supports 2 x M.2 Key M 2280
- Supports 2 PCIe x16 slots with PCIe Gen 5 for GPU cards
- Supports IPMI 2.0 (option)
- Optimized CPU socket layout design for airflow of rackmount system
Computer
CPU SocketLGA1851 socket Intel® Core™ Ultra 9/7/5 Processors, up to 125W (Arrow Lake-S)
ChipsetIntel® W880
BIOSAMI BIOS
System Memory4 x 288-pin DDR5-5600 ECC/non-ECC unbuffered Long-DIMM, up to 192GB
Watchdog Timer255 levels, 1 to 255 sec
TPMTPM 2.0
SMBusYes
Display
GraphicsIntel® Xe LPG Graphics
MemoryShare system memory
HDMI1 x HDMI 1.4b, up to 4096 x 2160 @ 24Hz
DisplayPort1 x DisplayPort++ (DP 1.2), up to 4096 x 2304 @ 60Hz
Storage
SSD2 x M.2 Key M 2280 support PCIe x4 via CPU with RAID 0/1
SATA4 x SATA-600 with RAID 0/1/5/10
Expansion
PCIe Slots2 x PCIe x16 slots (signal: PCIe Gen 5 x16 + PCIe x0 or PCIe Gen 5 x8 + PCIe Gen 4 x8)
PCIe x4 Slots5 x PCIe x4 slot open ended (3 x PCIe x4 signal, slot 3 & 6 PCIe x2 signal by PCH)
I/o interfaces
Ethernet1 x 10/100/1000 Mbps Intel® I219-LM with Wake-on-LAN, PXE Boot ROM, Intel® AMT with Intel vPro®
Ethernet2 x 10/100/1000/2500 Mbps Intel® I226-V with Wake-on-LAN and PXE Boot ROM
Ethernet1 x 10/100/1000Mbps IPMI LNA Intel® I210-AT shared with AST2600 (option)
USB4 x USB 3.2 Gen 2 x1 (10G) & 4 x USB 3.2 Gen 1 x1 (5G) (rear I/O)
USB2 x Dual USB 3.2 Gen 1 x1 (5G) (internal, box header)
USB1 x USB 2.0 (internal, 180D Type-A)
Serial2 x RS-232 (internal box header)
Serial2 x RS-232/422/485 (internal box header)
PS/21 x PS/2 keyboard (rear I/O)
PS/21 x PS/2 mouse (rear I/O)
AudioHD Codec audio as MIC-in/Line-in/Line-out
Digital I/O8-channel programmable
Hardware MonitoringDetect CPU/system temperature, voltage, and supports smart fan control
Remote ManagementIPMI 2.0 supported by OpenBMC (option)
Physical
Dimensions305 x 244 mm
Board Thickness1.6 mm
BatteryLithium 3 V/220 mAH
Environmental
Operating Temperature0°C to +60°C (+32°F to +140°F)
Relative Humidity10% to 95% relative humidity, non-condensing
Computer
CPU SocketLGA1851 socket Intel® Core™ Ultra 9/7/5 Processors, up to 125W (Arrow Lake-S)
ChipsetIntel® W880
BIOSAMI BIOS
System Memory4 x 288-pin DDR5-5600 ECC/non-ECC unbuffered Long-DIMM, up to 192GB
Watchdog Timer255 levels, 1 to 255 sec
TPMTPM 2.0
SMBusYes
Display
GraphicsIntel® Xe LPG Graphics
MemoryShare system memory
HDMI1 x HDMI 1.4b, up to 4096 x 2160 @ 24Hz
DisplayPort1 x DisplayPort++ (DP 1.2), up to 4096 x 2304 @ 60Hz
Storage
SSD2 x M.2 Key M 2280 support PCIe x4 via CPU with RAID 0/1
SATA4 x SATA-600 with RAID 0/1/5/10
Expansion
PCIe Slots2 x PCIe x16 slots (signal: PCIe Gen 5 x16 + PCIe x0 or PCIe Gen 5 x8 + PCIe Gen 4 x8)
PCIe x4 Slots5 x PCIe x4 slot open ended (3 x PCIe x4 signal, slot 3 & 6 PCIe x2 signal by PCH)
I/o interfaces
Ethernet1 x 10/100/1000 Mbps Intel® I219-LM with Wake-on-LAN, PXE Boot ROM, Intel® AMT with Intel vPro®
Ethernet2 x 10/100/1000/2500 Mbps Intel® I226-V with Wake-on-LAN and PXE Boot ROM
Ethernet1 x 10/100/1000Mbps IPMI LNA Intel® I210-AT shared with AST2600 (option)
USB4 x USB 3.2 Gen 2 x1 (10G) & 4 x USB 3.2 Gen 1 x1 (5G) (rear I/O)
USB2 x Dual USB 3.2 Gen 1 x1 (5G) (internal, box header)
USB1 x USB 2.0 (internal, 180D Type-A)
Serial2 x RS-232 (internal box header)
Serial2 x RS-232/422/485 (internal box header)
PS/21 x PS/2 keyboard (rear I/O)
PS/21 x PS/2 mouse (rear I/O)
AudioHD Codec audio as MIC-in/Line-in/Line-out
Digital I/O8-channel programmable
Hardware MonitoringDetect CPU/system temperature, voltage, and supports smart fan control
Remote ManagementIPMI 2.0 supported by OpenBMC (option)
Physical
Dimensions305 x 244 mm
Board Thickness1.6 mm
BatteryLithium 3 V/220 mAH
Environmental
Operating Temperature0°C to +60°C (+32°F to +140°F)
Relative Humidity10% to 95% relative humidity, non-condensing
