Question 1

Is this a registered ECC memory? My Mobo "SUPERMICRO MBD-X11SSH-LN4F-O" works with ECC, but not registered memory. It's throwing "Not Supported" memory error when I insert one in the DIMM.

Accepted Answer

According to Crucual's website this is registered memory.

Specs: DDR4 PC4-17000 • CL=15 • Dual Ranked • x4 based • Registered • ECC • DDR4-2133 • 1.2V •

Question 2

does memory fit on msix99a ack???

Accepted Answer

The chip should fit by this memory is ECC which I believe is not supported by this motherboard or the Intel i7 family only the Intel Xeon you probably can find cheaper memory that is not ECC.

Question 3

The Title is a misleading. Is it saying 16 2GB RAM or 2 16GB RAM?

Accepted Answer

Hello,

Thank you for contacting us in regards to your question.  The specifications of the item will be updated shortly. We thank you for brining this to our attention.

Thank you, 
Newegg Support

Brand	Crucial
Model	CT2K16G4RFD4213

Capacity	32GB (2 x 16GB)
Type	288-Pin DDR4 SDRAM
Speed	DDR4 2133 (PC4 17000)
CAS Latency	CL15
Voltage	1.20V
ECC	Yes
Buffered/Registered	Registered
Rank	2Rx4

Crucial 32GB (2 x 16GB) ECC Registered DDR4 2133 (PC4 17000) Server Memory Model CT2K16G4RFD4213

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Item#: N82E16820148840