Motherboard connectors pinouts diagrams @ pinoutguide.com (original) (raw)

Intel High Definition Audio connector Intel HD Audio analog front panel dongles can support up to two analog audio jacks, each of which signals user connection, or disconnection.
Motherboard 2-pin fan connector
Motherboard 3 pin CPU or Case Cooling fan connector
Motherboard 4 pin CPU PWM fan connector For 4-Wire Pulse Width Modulation (PWM) Controlled Fans
PC Speaker connector
RS232 serial motherboard header connector RS232 serial is also called COM port
USB 2.0/1.1 Header
USB 3.0 Header USB 3.0 is the successor of USB 2.0. USB 3 reduces the time required for data transmission, reduces power consumption, and is backward compatible with USB 2.0
USB 3.0 Header to USB 2.0 Header USB 3.0 contains normal USB 2.0 connections. This is commonly for PC cases that have ports that don't match the Available headers. Converting from 3.0 -> 2.0 is flawless, but converting from 2.0 -> 3.0 will make your 3.0 ports active, but will only function at 2.0 speeds.
USB header internal connector Used for card-edge bracket additinal USB ports and internal cardreaders. This is very old and does not match most modern mother board usb headers.

Apple BCM94360 connector Apple PCIe connector for BCM94360 Series WiFi Adapters
Apple Fan Connector (6 pin) Late model Apple laptops, iMacs and Mac Pros have analog speed control fans. This pinout and color scheme applies to fans made by Delta Electronics, models BFB0412HB (Apple P/N 603-5520), BFB0612H (Apple P/N 603-5519), BFB0812H (Apple P/N 603-6624), and others.
Apple Mac Pro dual fan connector Some Apple Mac Pros use a single 8 pin connector for two fans. Apple uses various color schemes for wires. This dual fan connector usually has all black wires.
Apple Motherboard 4 pin CPU PWM fan connector

Dell 4 pin Fan connector Laptop Dell Vostro 1015
Dell 5 pin Fan connector to standard 4 pin PWM Fan This is to fit a standard 4pin fan to a dell motherboard 5pin CPU (speed controlled) fan connector (essentially, you just swap pins 1 & 3 on the standard connector)
Dell Dimension 2350, 2400 internal USB & Speaker 20 Pin Front panel USB, Speaker (Optional MIC) Proprietary
Dell Dimension 3100/E310 and 5150 I/O Front Panel Assembly WARNING. Similar to Optiplex GX BUT +5v & Gnd differs !
DELL Dimension 9200 Fan Fan for CPU or HD
Dell GX270 SER2 motherboard connector
Dell JN454 Front Panel I/O
Dell Optiplex 360, 7010 motherboard power switch connector Dell Optiplex 360, 990, 7010, 9010, 3020 motherboard power switch connector
Dell OptiPlex 745 & Dimension C521 I/O Panel Assembly pin-out Similar to Dell Dimension 3100 (no Mic) and 5150 (USB skts are counted from the left)
Dell Optiplex 745 SFF internal USB connector For Dell Optiplex 745 SFF-Not tested on other Dell's models.
Dell OptiPlex GX280 Front Panel I/O Assembly Pin-Outs Similar to other Dell I/O assembly boards, it is a board with USB connectors and a headphone connector. It also has a connection to the Control Panel Board (Power switch and LEDs).
Dell Optiplex Internal Serial Port Dell Optiplex Internal Serial Port-3.3V Signaling
Dell PowerEdge 2300 internal USB connector 10 pin one row special USB connector
Dell Vostro 470 front panel connector for LEDs and switch (F_PANEL) 12-way header with removable pins.

HP Compaq ProLiant ML310 G1 4-pin CPU Fan Proprietary 4 pin CPU Fan connector
HP Compaq ProLiant ML310 G1 Case Fan Proprietary 5 pin Fan connector
HP Compaq ProLiant ML310 G1 Second AUX Power Connector Molex 10 Pin PSU AUX Connector
HP dc7900 secondary COM port header cable Secondary COM port cable for the Hewlett Packard dc7900 series workstations.
HP Microserver 12 FAN HP Microserver 12 FAN Pinout
HP ML310 Front Panel Header
HP ML350 G6 Motherboard Fan Connector HP ML350 G6 Motherboard Fan Connector Pinout
HP Server 5 pin Fan connector HP Server 5 pin Fan connector (DL580 G7)
HP Vectra VE 5/75 System Panel Header (PNL-A) 6-pin Panel This header accomodates several system panel functions

HPE Hard Drive Backplane Power Cable 661361-001 Cable used to connect an extra bay on HPE Generation 8 servers (ML350p G8 for example). Cable part of cable kit 667266-001 containing Hard Drive Power Cable, short SAS cable and dual connectors graphics power cable.

Lenovo COM2 header Motherboard header on Lenovo M82 for a second serial RS-232 port (COM2) 15 pins (+1 missing)
Lenovo COM2 header 11 pin Header on Lenovo M55 motherboard for second RS-232 port (COM2) 11 pins (+1 missing)