Biostar PT890 775 Setup Manual page 17

JCMOS1: Clear CMOS Header
By placing the jumper on pin2-3, it allows user to restore the BIOS safe setting
and the CMOS data, please carefully follow the procedures to avoid damaging
the motherboard.
※ Clear CMOS Procedures:
1. Remove AC power line.
2. Set the jumper to "Pin 2-3 close".
3. Wait for five seconds.
4. Set the jumper to "Pin 1-2 close".
5. Power on the AC.
6. Reset your desired password or clear the CMOS data.
JSATA1~JSATA2: Serial ATA Connectors
The motherboard has a PCI to SATA Controller with 2 channels SATA interface,
it satisfies the SATA 1.0 spec and with transfer rate of 1.5Gb/s.
1
3
Pin 1-2 Close:
Normal Operation (default).
1
1 3
3
Pin 2-3 Close:
Clear CMOS data.
7 4 1
JSATA2
JSATA1
1 4 7
PT890 775
Pin Assignment
1 Ground
2 TX+
3 TX-
4 Ground
5 RX-
6 RX+
7 Ground
17