Biostar U8788 U8788 user's manual - Page 21
Front USB Header: JUSB4 V2.0, 10. 5V / 5VSB Selection for KB: JKBV1, 11. ATX 12V Power Connector
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Page 21 highlights
Chapter 1 Motherboard Description 4-9. Front USB Header: JUSB4 (V2.0) (JUSB4) Pin 1 3 5 7 9 Assignment +5V(fused) USBP4USBP4+ Ground KEY Pin Assignment 2 +5V(fused) 4 USBP5- 6 USBP5+ 8 Ground 10 NC 4-10. 5V / 5VSB Selection for KB: JKBV1 JKBV1 Assignment 1 3 5V 1-2 Closed 1 3 2-3 Closed 5V_SB 4-11. ATX 12V Power Connector: JATXPWR2 PIN 1 2 Assignment 12V 12V PIN 3 4 Assignment Ground Ground 4-12. Front 1394 Header: J1394A1 (Optional) Pin Assignment Pin Assignment 1 A1+ 2 A1- 3 Ground 4 Ground 5 B1+ 6 B1- 7 +12V 8 +12V 9 KEY 10 NA 1-18
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Chapter 1
Motherboard Description
1-18
4-9. Front USB Header: JUSB4 (V2.0)
(JUSB4)
Pin
Assignment
Pin
Assignment
1
+5V(fused)
2
+5V(fused)
3
USBP4-
4
USBP5-
5
USBP4+
6
USBP5+
7
Ground
8
Ground
9
KEY
10
NC
4-10. 5V / 5VSB Selection for KB: JKBV1
JKBV1
Assignment
1
3
1-2 Closed
5V
1
3
2-3 Closed
5V_SB
4-11. ATX 12V Power Connector: JATXPWR2
PIN
Assignment
PIN
Assignment
1
12V
3
Ground
2
12V
4
Ground
4-12. Front 1394 Header: J1394A1
(Optional)
Pin
Assignment
Pin
Assignment
1
A1+
2
A1-
3
Ground
4
Ground
5
B1+
6
B1-
7
+12V
8
+12V
9
KEY
10
NA