User Manual

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A1SAi & A1SRi Series Motherboard User’s Manual

LED Indicators

LED Description Color/State Status

LED2 BMC Heartbeat LED Green: Blinking BMC: Normal

LED3 Power LED Green: On System PWR On

LED7 UID Switch LED Blue: On Unit Identied

LED8 Overheat/PWR Fail/Fan Fail LED Red: Solid on/Blinking

Solid On: Overheat,

Blinking: PWR Fail or Fan Fail

Note: The A1SRi Series motherboard supports Intel QuickAssist technol-

ogy to enhance network routing and internet security for communications

systems. The A1SAi Series motherboard supports Turbo Boost Technology,

offering turbo boost capabilities to maximize system performance for server

platforms. Refer to the Model Variation table below for details.

Mothrboard Model Name

A1SAi-2750F

A1SAi-2550F A1SRi-2758F A1SRi-2558F A1SRi-2358F

SoC Code Name

Avoton

Rangeley

Rangeley Rangeley

Processor Number C2750 C2550 C2758 C2558 C2358

# of Cores 8 4 8 4 2

# of Threads 8 4 8 4 2

Clock Speed 2.4 GHz 2.4 GHz 2.4 GHz 2.4 GHz 1.7 GHz

Max Turbo Frequency 2.6 GHz 2.6 GHz N/A N/A 2.0 GHz

Intel® QuickAssist Technology No No Yes Yes Yes

Instruction Set 64-bit 64-bit 64-bit 64-bit 64-bit

Embedded Options Available No No Yes Yes Yes

SoC Max TDP 20 W 14 W 20 W 15 W 7W

# of Memory Channels 2 2 2 2 1

Intel® Turbo Boost Technology Yes Yes No No Yes

Intel® Virtualization Technology (VT-x) Yes Yes Yes Yes Yes

AES New Instructions Yes Yes Yes Yes Yes

Intel® Hyper-Threading Technology No No No No No

Intel® QuickAssist Technology No No Yes Yes Yes

A1SAi/A1SRi Series Motherboard Model Variation Table