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GETTING TO KNOW YOUR ECS-8000
2.4.9 CN27, CN15 : Mini PCIe, mSATA
Both mSATA and Mini PCIe share the same form factor and similar electrical
pinout assignments on their connectors. There was no clear mechanism to
distinguish if a mSATA drive or a Mini PCIe device is plugged into the socket
until recently that SATA I/O issued an ECN change (ECN #045) to redefine pin-
43 on mSATA connector as “no connect” instead of “return current path” (or
GND).
When an mSATA drive is inserted, its pin-43 is “no connect”, and the
respective pin on the socket is being pulled-up to logic 1. When a Mini PCIe
device is inserted, its pin-43 forces the respective pin on the socket to ground,
or logic 0.
SW4, SW1 Pin-43 are designed for switching mSATA drive and Mini
PCIe device.
Mini PCIe
DIP Switch
SW 4-1
DIP Switch
SW 4-2
Interface
CN27
ON
OFF
*Auto Detection
OFF
ON
Mini PCI-E (Forced)
OFF
OFF
mSATA (Forced)
CN15
SW4
SW1
CN27
Mini PCIe
DIP Switch
SW 1-1
DIP Switch
SW 1-2
Interface
CN15
ON
OFF
*Auto Detection
OFF
ON
Mini PCI-E (Forced)
OFF
OFF
mSATA (Forced)
