Intel MFS5520VI User Guide - Page 22

Table 3. Diagnostic LED Information LED Name Function Color ID LED Drive activity LED Provides an aid in identifying a compute module from the front panel Indicates drive activity Blue Green NIC1-2 LEDs I/O 1 - I/O 2 Activity LEDs Indicates network activity and link Indicates network activity and link of NICs on I/O mezzanine card Green Green Indicator Use the Intel® Modular Server Control software to activate or inactivate the LED. Off = No drive activity Blink = Drive activity Blink = Outbound activity Off = No link On = Link established Blink = Activity Hardware Requirements To avoid integration difficulties and possible board damage, your server compute module must meet the requirements outlined below. Processor The Intel® Compute Module MFS5520VI supports up to two Intel® Xeon® Processors 5500 series or two Intel® Xeon® Processor 5600 series in FC-LGA 1366 Socket B package with up to 95-W Thermal Design Power (TDP): • 4.8 GT/s, 5.86 GT/s and 6.4 GT/s Intel® QuickPath Interconnect (Intel® QPI) • Enterprise Voltage Regulator-Down (EVRD) 11.1 Memory The Intel® Compute Module MFS5520VI supports six DDR3 memory channnels (three per processor socket) with two DIMMs per channel, thereby supporting up to 12 DIMMs with dual-processor sockets. The compute module supports DDR3 1066 and DDR3 1333 memory technologies and supports both registered DIMMs (RDIMMs) and unbuffered DIMMs (UDIMMs). RDIMMs must be ECC only, while UDIMMs can be ECC or non-ECC. 8 Intel® Compute Module MFS5520VI User Guide