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A1SAi & A1SRi Series Motherboard User’s Manual
A1SAi & A1SRi Series Motherboard 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 Identied
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 Technol-
ogy, offering turbo-boost capabilities to maximize system performance for
server platforms. Refer to the Model-Variation table on Page 1-7 for details.
A1SAi-2550F A1SRi-2758F A1SRi-2558F
Processor Number C2750 C2550 C2758 C2558
# of Threads 8 4 8 4
Clock Speed 2.4 GHz 2.4 GHz 2.4 GHz 2.4 GHz
Max Turbo Frequency 2.6 GHz 2.6 GHz N/A N/A
Intel® QuickAssist Technology No No Yes Yes
Instruction Set 64-bit 64-bit 64-bit 64-bit
Embedded Options Available No No Yes Yes
SoC Max TDP 20 W 14 W 20 W 15 W
# of Memory Channels 2 2 2 2
Intel® Turbo Boost Technology Yes Yes No No
Intel® Virtualization Technology (VT-x) Yes Yes Yes Yes
AES New Instructions Yes Yes Yes Yes
Intel® Hyper-Threading Technology No No No No
Intel® QuickAssist Technology No No Yes Yes
A1SAi/A1SRi Series Motherboard Model Variation Table
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