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B1SA4-2750F/B1SA4-2550F Motherboard User’s Manual
1-2 Motherboard Features
CPU One Intel® ATOM C2750 (8 cores) or ATOM C2550 (4
cores) per node, total of four (4) CPUs on board.
Memory Two (2) SODIMM slots per node supports up to 32GB of
DDR3 Unbuffered, ECC SODIMM memory, up to 1600MHz.
The motherboard has eight (8) total memory slots. Sup-
ports dual-channel memory bus..
DIMM sizes
SODIMM 1GB, 2GB, 4GB, 8GB, 16GB
Network Connections
Supports networking via edge connector to backplane
Supports IPMI (per node) with heartbeat LED indicator
I/O Devices SATA Connections
SATA 2.0 Ports via onboard SATA interface
connector
USB Devices
Support via edge connector to backplane
Keyboard/Mouse
Supported via (1) KVM port, per node
Serial (COM) Ports
Support via edge connector to backplane
BIOS 32 Mb SPI AMI BIOS
®
SM Flash BIOS
Play and Plug APM 1.2, ACPI 1.0/2.0, USB Keyboard and
SMBIOS 2.3, RTC Wake-up
Power Conguration ACPI/ACPM Power Management
Power-on mode for AC power recovery
PC Health Monitoring CPU & Chassis Monitoring
Onboard voltage monitors for CPU cores, +3.3V, +5V, +/-
12V, +3.3V Stdby, +5V Stdby, VBAT, CPU Vcore, Memory
CPU 1+1 phase switching voltage regulator
CPU/System overheat LED and control
CPU Thermal Trip support
System Management PECI(PlatformEnvironmentCongurationInterface)2.0
support
System resource alert via SuperDoctor
®
III
Watch Dog, NMI
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