Asus Motherboard M2S-X - Manual (Page 39)

ASUS M2S-X 1-27
7. Chassis intrusion connector (4-1 pin CHASSIS)
This lead is for a chassis designed with intrusion detection feature.
This requires an external detection mechanism such as a chassis
intrusion sensor or microswitch. When you remove any chassis
component, the sensor triggers and sends a high-level signal to this
lead to record a chassis intrusion event.
By default, the pins labeled “Chassis Signal” and “Ground” are shorted
with a jumper cap. If you wish to use the chassis intrusion detection
feature, remove the jumper cap from the pins.
M2S-X
R
M2S-X Chassis Intrusion Connector
CHASSIS
+5VSB_M
B
Chassis Signal GND
(Default)
8. Serial ATA connectors (7-pin SATA1, SATA2)
These next generation connectors support the thin Serial ATA cables
for primary internal storage devices. The current Serial ATA interface
allows up to 150 MB/s data transfer rate, faster than the standard
parallel ATA with 133MB/s (Ultra ATA/133).
M2S-X
R
M2S-X SATA Connectors
G
ND
RS
AT
A_
TX
P2
RS
AT
A_
TX
N2
G
ND
RS
AT
A_
RX
P2
RS
AT
A_
RX
N2
G
ND
SATA2
G
ND
RS
AT
A_
TX
P1
RS
AT
A_
TX
N1
G
ND
RS
AT
A_
RX
P1
RS
AT
A_
RX
N1
G
ND
SATA1