Monitor Pinouts: Monochrome - TTL (18.43 KHz - 720x350) 9-pin Sub-D connector: Pins: 1 GND 2-5 Unused 6 Intensity 7 Video 8 Horizontal Sync TTL Positive 9 Vertical Sync TTL Negative CGA - TTL (15.75 KHz - 320x200 or 640x200) 9-pin Sub-D connector: Pins: 1 Ground 2 Unused 3 RED Video 4 GREEN Video 5 BLUE Video 6 Intensity 7 Unused 8 Horizontal Sync TTL Positive 9 Vertical Sync TTL Positive IBM PCjr CGA (Berg style connector): Pins: A01 TV vertical drive (not for display) A02 Ground A03 TV horizontal drive (not for display) A04 Blue (CGA pin 5) A05 Red (CGA pin 3) A06 Intensity (CGA pin 6) A07 Green (CGA pin 4) A08 Comp sync drive (not for display) A09 Audio B01 + Vertical drive (CGA pin 9) B02 Ground B03 + Horizontal drive (CGA pin 8) B04 - B08 Ground B09 frame ground (CGA pin 1) EGA - TTL (15.74-21.85 KHz) 9-pin Sub-D connector: Pins: 1 GND 2 Secondary RED Video 3 Primary RED Video 4 Primary GREEN Video 5 Primary BLUE Video 6 Secondary Green Video/Intensity 7 Secondary Blue Video 8 Horizontal Sync TTL Positive 9 Vertical Sync TTL Negative IBM PGA (Professional Graphics Adapter): Pins: 1 Red 2 Green 3 Blue 4 Composite sync. 5 Mode control 6 Red ground 7 Green ground 8 Blue ground 9 Ground Original VGA (from 31.5 KHz up) 15-pin mini Sub-D (Three rows of 5 pins): Pins: 1 Red (Analog) 2 Green (Analog) 3 Blue (Analog) 4 Reserved 5 Ground 6 Red Return 7 Green Return 8 Blue Return 9 No Connect 10 Ground 11 ID0. GND for Color monitors, NC for Mono monitors 12 ID1. NC for Color monitors, GND for Mono monitors. Some systems only uses ID0 for monitr ID. 13 Horzontal Sync 14 Vertical Sync 15 No Connect VESA Display Data Channel (DDC) Standard. 15-pin mini Sub-D: Pins: 1 Red (Analog) 2 Green (Analog) 3 Blue (Analog) 4 Reserved 5 Return 6 Red Return 7 Green Return 8 Blue Return 9 +5 VDC (from host). Should only be used for DDC2 devices 10 Sync return 11 Monitor ID0 (optional) 12 Data (SDA) 13 Horzontal Sync 14 Vertical Sync 15 Data clock (SCL). Should only be used for DDC2 devices There are 3 different protocols defined for DDC: DDC1 - A unidirectional (display to host only) serial comm system which provides basic display ID and feature support information (including supported timings, display size, colorimetry and gamma, etc.) to the host. This uses pin 12 on the 15-pin "VGA" connector as a data line. DDC2B - Adds clock (pin 15) and return (pin 11) to enable at least ID information to be obtained via an I2C interface. I2C is a bidirectional interface, but display control via DDC2B is not defined at this time. DDC2AB - Full ID and control of the monitor via ACCESS.bus. As ACCESS.bus is basically a command and protocol definition on top of the I2C hardware interface, this uses the same lines as DDC2B. VESA Feature Connector (a 2x13 pin-header or edge connector): Pins: 1-8 Pixel data 0-7 9 Dot Clock 10 Blank 11 Horizontal Sync 12 Vertical Sync 13-16 Ground 17 External Video Select. When high pins 1-8 are outputs, when low they are inputs. This pin has an internal pull-up. 18 External Sync Select. When high pins 10-12 are outputs. This pin has an internal pull-up. 19 External Dot Clock Select. When high pin 9 is an output. This pin has an internal pull-up. 20 No Connection 21-24 Ground 25-26 No Connection Note: Pin numbers are 1-13 on the lower row (pin-header)/component side(edge) and pins 14-26 on the other row/side. Low pins towards the back end. Other sources may use A1-13,B1-13 or count across the pin-header. BUS connectors pin listings: ISA Bus. Pins: A1 -I/O CH CHK A2 SD07 A3 SD06 A4 SD05 A5 SD04 A6 SD03 A7 SD02 A8 SD01 A9 SD00 A10 -I/O CH RDY A11 AEN A12 SA19 A13 SA18 A14 SA17 A15 SA16 A16 SA15 A17 SA14 A18 SA13 A19 SA12 A20 SA11 A21 SA10 A22 SA09 A23 SA08 A24 SA07 A25 SA06 A26 SA05 A27 SA04 A28 SA03 A29 SA02 A30 SA01 A31 SA00 B1 GND B2 RESET B3 +5V B4 IRQ9 B5 -5V B6 DRQ2 B7 -12V B8 0WS B9 +12V B10 GND B11 -SMEMW B12 -SMEMR B13 -IOW B14 -IOR B15 -DACK3 B16 -DRQ3 B17 -DACK1 B18 -DRQ1 B19 -REFRESH B20 BCLK B21 IRQ7 B22 IRQ6 B23 IRQ5 B24 IRQ4 B25 IRQ3 B26 -DACK2 B27 T/C B28 BALE B29 +5V B30 OSC B31 GND C1 SBHE C2 LA23 C3 LA22 C4 LA21 C5 LA20 C6 LA19 C7 LA18 C8 LA17 C9 -MEMR C10 -MEMW C11 SD08 C12 SD09 C13 SD10 C14 SD11 C15 SD12 C16 SD13 C17 SD14 C18 SD15 D1 -MEMCS16 D2 -I/OCS16 D3 IRQ10 D4 IRQ11 D5 IRQ12 D6 IRQ15 D7 IRQ14 D8 -DACK0 D9 -DRQ0 D10 -DACK5 D11 -DRQ5 D12 -DACK6 D13 -DRQ6 D14 -DACK7 D15 -DRQ7 D16 +5V D17 -MASTER D18 GND Note: A & B are on the rearmost connector, C & D on the shorter front connector, A & C are o the component side, B & D on the back side. Lower numbers are towards the rear covers. Note: This is the 16bit ISA bus, the 8bit bus is essentially just A & B EISA Bus. Pins: A1 Not used A2 Data 7 A3 Data 6 A4 Data 5 A5 Data 4 A6 Data 3 A7 Data 2 A8 Data 1 A9 Data 0 A10-11 Not used A12 SA19 A13 SA18 A14 SA17 A15 SA16 A16 SA15 A17 SA14 A18 SA13 A19 SA12 A20 SA11 A21 SA10 A22 SA9 A23 SA8 A24 SA7 A25 SA6 A26 SA5 A27 SA4 A28 SA3 A29 SA2 A30 SA1 A31 SA0 B1 Ground B2 Reserved B3 +5V B4 Not used B5 -5V B6 Not used B7 -12V B8 Not used B9 +12V B10 Ground B11-19 Not used B20 BCLK B21-28 Not used B29 +5V B30 Not used B31 Ground C1 Not used C2 LA23 C3 LA22 C4 LA21 C5 LA20 C6 LA19 C7 LA18 C8 LA17 C9 MRDC* C10 Not used C11 Data 8 C12 Data 9 C13 Data 10 C14 Data 11 C15 Data 12 C16 Data 13 C17 Data 14 C18 Data 15 D1 M16* D2-15 Not used D16 +5V D17 Not used D18 Ground E1 CMD* E2 START* E3 EXRDY E4 EX32* E5 Ground E7-9 Not used E10 W-R E11 Ground E12-14 Not used E15 Ground E17 BE1* E18 LA31* E19 Ground E20 LA30* E21 LA28* E22 LA27* E23 LA25* E24 Ground E26 LA15 E27 LA13 E28 LA12 E29 LA11 E30 Ground E31 LA9 F1 Ground F2-3 +5V F4-5 Not used F7-8 Not used F9 +12V F10 M-IO F11-12 Not used F13 Ground F14 Not used F15 BE3* F17 BE2* F18 BE0* F19 Ground F20 +5V F21 LA29* F22 Ground F23 LA26* F24 LA24* F26 LA16 F27 LA14 F28-29 +5V F30 Ground F31 LA10 G1 LA7 G2 Ground G3 LA4 G4 LA3 G5 Ground G7 Data 17 G8 Data 19 G9 Data 20 G10 Data 22 G11 Ground G12 Data 25 G13 Data 26 G14 Data 28 G16 Ground G17 Data 30 G18 Data 31 G19 Not used H1 LA8 H2 LA6 H3 LA5 H4 +5V H5 LA2 H7 Data 16 H8 Data 18 H9 Ground H10 Data 21 H11 Data 23 H12 Data 24 H13 Ground H14 Data 27 H16 Data 29 H17-18 +5V H19 Not used Note: A, B, C & D are the upper contacts, E, F, G & H the lower ones. A, C, E & G are on the component side, B, D, F & H on the back side. A, B, E & F are on the first (long) connector, C, D, G & H on the second (short) connector. Pins E6,E16,E25,F6,F16,F25,G6,G15,H6 and H15 do not exist VESA Local Bus. Pins: A1 DAT1 A2 DAT3 A3 GND A4 DAT5 A5 DAT7 A6 DAT9 A7 DAT11 A8 DAT13 A9 DAT15 A10 GND A11 DAT17 A12 VCC A13 DAT19 A14 DAT21 A15 DAT23 A16 DAT25 A17 GND A18 DAT27 A19 DAT29 A20 DAT31 A21 ADR30 A22 ADR28 A23 ADR26 A24 GND A25 ADR24 A26 ADR22 A27 VCC A28 ADR20 A29 ADR18 A30 ADR16 A31 ADR14 A32 ADR12 A33 ADR10 A34 ADR8 A35 GND A36 ADR6 A37 ADR4 A38 WBACK# A39 BE0# A40 VCC A41 BE1# A42 BE2# A43 GND A44 BE3# A45 ADS# A48 LRDY# A49 LDEV# A50 LREQ# A51 GND A52 LGNT# A53 VCC A54 ID2 A55 ID3 A56 ID4 A57 LKEN# A58 LEADS# B1 DAT0 B2 DAT2 B3 DAT4 B4 DAT6 B5 DAT8 B6 GND B7 DAT10 B8 DAT12 B9 VCC B10 DAT14 B11 DAT16 B12 DAT18 B13 DAT20 B14 GND B15 DAT22 B16 DAT24 B17 DAT26 B18 DAT28 B19 DAT30 B20 VCC B21 ADR31 B22 GND B23 ADR29 B24 ADR27 B25 ADR25 B26 ADR23 B27 ADR21 B28 ADR19 B29 VCC B30 ADR17 B31 ADR15 B32 VCC B33 ADR13 B34 ADR11 B35 ADR9 B36 ADR7 B37 ADR5 B38 VCC B39 ADR3 B40 ADR2 B41 N/C B42 RESET# B43 D/C# B44 M/IO# B45 W/R# B48 RDYRTN# B49 GND B50 IRQ9 B51 BRDY# B52 BLAST# B53 ID0 B54 ID1 B55 GND B56 LCLK B57 VCC B58 BS16# Note: This is the VESA special 3rd connector (with the narrow traces), the two other connectors are essentially the ISA 16bit connectors. Lower numbers are towards the rear covers. A is the component side, B the backside. Pins A46,A47,B46 and B47 do not exist. PCI Bus. Pins: A1 TRST- A2 +12V A3 TMS A4 TD1 A5 VCC A6 INTA- A7 INTC- A8 VCC A9 Reserved A10 VCC A11 Reserved A12-A13 Ground A14 Reserved A15 RST- A16 VCC A17 GNT- A18 GNC A19 Reserved A20 AD30 A21 +3.3V A22 AD28 A23 AD26 A24 Ground A25 AD24 A26 IDSEL A27 +3.3V A28 AD22 A29 AD20 A30 Ground A31 AD18 A32 AD16 A33 +3.3V A34 FRAME- A35 Ground A36 TRDY A37 Ground A38 STOP- A39 +3.3V A40 SDONE A41 SBO- A42 Ground A43 PAR A44 AD15 A45 +3.3V A46 AD13 A47 AD11 A48 Ground A49 AD9 A52 C/BE0- A53 +3.3V A54 AD6 A55 AD4 A56 Ground A57 AD2 A58 AD0 A59 VCC A60 REQ64- A61 VCC A62 VCC B1 -12V B2 TCK B3 Ground B4 TD0 B5 VCC B6 VCC B7 INTB- B8 INTD- B9 PRSNT1- B10 Reserved B11 PRSNT2- B12 Ground B13 Ground B14 Reserved B15 Ground B16 CLK B17 Ground B18 REQ- B19 VCC B20 AD31 B21 AD29 B22 Ground B23 AD27 B24 AD25 B25 +3.3V B26 C/BE3- B27 AD23 B28 Ground B29 AD21 B30 AD19 B31 +3.3V B32 AD17 B33 C/BE2- B34 Ground B35 IRDY- B36 +3.3V B37 DEVSEL- B38 Ground B39 LOOK- B40 PERR- B41 +3.3V B42 SERR B43 +3.3V B44 C/BE1- B45 AD14 B46 Ground B47 AD12 B48 AD10 B49 Ground B52 AD8 B53 AD7 B54 +3.3V B55 AD5 B56 AD3 B57 Ground B58 AD1 B59 VCC B60 ACK64- B61 VCC B62 VCC Note: A50,51 & B50,51 don't exist