EIA/TIA-568A and 568B pinouts
Pin | T568A Pair | T568B Pair | 1000BASE-T Signal ID | Wire | T568A Color | T568B Color | Pins on plug face (socket is reversed) |
---|
1 | 3 | 2 | DA+ | tip | white/green stripe | white/orange stripe | |
2 | 3 | 2 | DA- | ring | green solid | orange solid |
3 | 2 | 3 | DB+ | tip | white/orange stripe | white/green stripe |
4 | 1 | 1 | DC+ | ring | blue solid | blue solid |
5 | 1 | 1 | DC- | tip | white/blue stripe | white/blue stripe |
6 | 2 | 3 | DB- | ring | orange solid | green solid |
7 | 4 | 4 | DD+ | tip | white/brown stripe | white/brown stripe |
8 | 4 | 4 | DD- | ring | brown solid | brown solid |
RJ45 to balanced audio/XLR
Pin | Analog signal | AES/EBU | T568A Color | T568B Color | Pins on plug face (socket is reversed) |
---|
1 | L+ | AES+ | white/green stripe | white/orange stripe | |
2 | L- | AES- | green solid | orange solid |
3 | R+ | n/c | white/orange stripe | white/green stripe |
4 | Gnd | Gnd | blue solid | blue solid |
5 | n/c | n/c | white/blue stripe | white/blue stripe |
6 | R- | n/c | orange solid | green solid |
7 | -15 | -15 | white/brown stripe | white/brown stripe |
8 | +15 | +15 | brown solid | brown solid |
Power over Ethernet, IEEE 802.3af standards A and B
PINS on Switch | T568A Color | T568B Color | 10/100 DC on Spares (mode B) | 10/100 Mixed DC & Data (mode A) | 1000 (1 Gigabit) DC & Bi-Data (mode B) | 1000 (1 Gigabit) DC & Bi-Data (mode A) |
---|
Pin 1 | white/green stripe | white/orange stripe | Rx + | Rx + DC + | TxRx A + | TxRx A + DC + |
---|
Pin 2 | green solid | orange solid | Rx - | Rx - DC + | TxRx A - | TxRx A - DC + |
---|
Pin 3 | white/orange stripe | white/green stripe | Tx + | Tx + DC - | TxRx B + | TxRx B + DC - |
---|
Pin 4 | blue solid | blue solid | DC + | unused | TxRx C + DC + | TxRx C + |
---|
Pin 5 | white/blue stripe | white/blue stripe | DC + | unused | TxRx C - DC + | TxRx C - |
---|
Pin 6 | orange solid | green solid | Tx - | Tx - DC - | TxRx B - | TxRx B - DC - |
---|
Pin 7 | white/brown stripe | white/brown stripe | DC - | unused | TxRx D + DC - | TxRx D + |
---|
Pin 8 | brown solid | brown solid | DC - | unused | TxRx D - DC - | TxRx D - |
---|
Ethernet crossover cables
Two pairs crossed, two pairs uncrossed
10BASE-T or 100BASE-TX crossoverPin | Connection 1: T568A
| Connection 2: T568B
| Pins on plug face |
---|
signal | pair | color | signal | pair | color |
1 | BI_DA+ | 3 | white/green stripe | BI_DB+ | 2 | white/orange stripe | |
2 | BI_DA- | 3 | green solid | BI_DB- | 2 | orange solid |
3 | BI_DB+ | 2 | white/orange stripe | BI_DA+ | 3 | white/green stripe |
4 | | 1 | blue solid | | 1 | blue solid |
5 | | 1 | white/blue stripe | | 1 | white/blue stripe |
6 | BI_DB- | 2 | orange solid | BI_DA- | 3 | green solid |
7 | | 4 | white/brown stripe | | 4 | white/brown stripe |
8 | | 4 | brown solid | | 4 | brown solid |
Gigabit T568A crossover
All four pairs crossed
10BASE-T, 100BASE-TX, 100BASE-T4 or 1000BASE-T crossover (shown as T568A)Pin | Connection 1: T568A | Connection 2: T568A Crossed | Pins on plug face |
---|
signal | pair | color | signal | pair | color |
1 | BI_DA+ | 3 | white/green stripe | BI_DB+ | 2 | white/orange stripe | |
2 | BI_DA- | 3 | green solid | BI_DB- | 2 | orange solid |
3 | BI_DB+ | 2 | white/orange stripe | BI_DA+ | 3 | white/green stripe |
4 | BI_DC+ | 1 | blue solid | BI_DD+ | 4 | white/brown stripe |
5 | BI_DC- | 1 | white/blue stripe | BI_DD- | 4 | brown solid |
6 | BI_DB- | 2 | orange solid | BI_DA- | 3 | green solid |
7 | BI_DD+ | 4 | white/brown stripe | BI_DC+ | 1 | blue solid |
8 | BI_DD- | 4 | brown solid | BI_DC- | 1 | white/blue stripe |
Gigabit T568B crossover
All four pairs crossed
10BASE-T, 100BASE-TX, 100BASE-T4 or 1000BASE-T crossover (shown as T568B)Pin | Connection 1: T568B | Connection 2: T568B Crossed | Pins on plug face |
---|
signal | pair | color | signal | pair | color |
1 | BI_DA+ | 2 | white/orange stripe | BI_DB+ | 3 | white/green stripe | |
2 | BI_DA- | 2 | orange solid | BI_DB- | 3 | green solid |
3 | BI_DB+ | 3 | white/green stripe | BI_DA+ | 2 | white/orange stripe |
4 | BI_DC+ | 1 | blue solid | BI_DD+ | 4 | white/brown stripe |
5 | BI_DC- | 1 | white/blue stripe | BI_DD- | 4 | brown solid |
6 | BI_DB- | 3 | green solid | BI_DA- | 2 | orange solid |
7 | BI_DD+ | 4 | white/brown stripe | BI_DC+ | 1 | blue solid |
8 | BI_DD- | 4 | brown solid | BI_DC- | 1 | white/blue stripe |
Registered Jack (RJ) 11, 14, 25
Position | Pair | T/R | ± | RJ11 | RJ14 | RJ25 | 25-pair color code | U.S. Bell System colors | German colors | Australian colors |
---|
1 | 3 | T | + | | | T3 | white/green | white | violet | orange |
2 | 2 | T | + | | T2 | T2 | white/orange | black | green | red |
3 | 1 | R | − | R1 | R1 | R1 | blue/white | red | white | blue |
4 | 1 | T | + | T1 | T1 | T1 | white/blue | green | brown | white |
5 | 2 | R | − | | R2 | R2 | orange/white | yellow | yellow | black |
6 | 3 | R | − | | | R3 | green/white | blue | slate | green |
Registered Jack (RJ) 21/21X
Color | Pin (Tip) | | Pin (Ring) | Color |
---|
White/Blue | 26 | | 1 | Blue/White |
White/Orange | 27 | | 2 | Orange/White |
White/Green | 28 | | 3 | Green/White |
White/Brown | 29 | | 4 | Brown/White |
White/Slate | 30 | | 5 | Slate/White |
Red/Blue | 31 | | 6 | Blue/Red |
Red/Orange | 32 | | 7 | Orange/Red |
Red/Green | 33 | | 8 | Green/Red |
Red/Brown | 34 | | 9 | Brown/Red |
Red/Slate | 35 | | 10 | Slate/Red |
Black/Blue | 36 | | 11 | Blue/Black |
Black/Orange | 37 | | 12 | Orange/Black |
Black/Green | 38 | | 13 | Green/Black |
Black/Brown | 39 | | 14 | Brown/Black |
Black/Slate | 40 | | 15 | Slate/Black |
Yellow/Blue | 41 | | 16 | Blue/Yellow |
Yellow/Orange | 42 | | 17 | Orange/Yellow |
Yellow/Green | 43 | | 18 | Green/Yellow |
Yellow/Brown | 44 | | 19 | Brown/Yellow |
Yellow/Slate | 45 | | 20 | Slate/Yellow |
Violet/Blue | 46 | | 21 | Blue/Violet |
Violet/Orange | 47 | | 22 | Orange/Violet |
Violet/Green | 48 | | 23 | Green/Violet |
Violet/Brown | 49 | | 24 | Brown/Violet |
Violet/Slate | 50 | | 25 | Slate/Violet |
Registered Jack (RJ) 48 48X
Pin | Pair | Signal | Color |
---|
1 | R | RX Ring | Orange/White |
2 | T | RX Tip | White/Orange |
3 | | reserved | White/Green |
4 | R1 | TX Ring | Blue/White |
5 | T1 | TX Tip | White/Blue |
6 | | reserved | Green/White |
7 | | shield | White/Brown |
8 | | shield | Brown/White |
T-1 (DS-1, DSX-1) cross over cable
Two pairs crossed, two pairs uncrossed
T1 crossoverPin | Connection 1: T568A
| Connection 2: T568B
| Pins on plug face |
---|
pair | color | pair | color |
1 | 2 | white/orange stripe | 1 | blue solid | |
2 | 2 | orange solid | 1 | white/blue stripe |
3 | 3 | white/green stripe | 3 | white/green stripe |
4 | 1 | blue solid | 2 | white/orange stripe |
5 | 1 | white/blue stripe | 2 | orange solid |
6 | 3 | green solid | 3 | green solid |
7 | 4 | white/brown stripe | 4 | white/brown stripe |
8 | 4 | brown solid | 4 | brown solid |
Standard 25 pair wire color code
Commonly used RS-232 signals and pin assignments
Signal | Origin | D-subminiature DB-25 | D-subminiature DE-9 (TIA-574) | Modified Modular Jack|MMJ | Modular connector 8P8C ("RJ45") | Modular connector 10P10C ("RJ50") |
---|
Name | Abbreviation | DTE | DCE | TIA-561 | Yost | Cyclades | National Instruments | Cyclades | Digi |
---|
Transmitted Data | TxD | ● | | 2 | 3 | 2 | 6 | 3 | 3 | 8 | 4 | 5 |
Received Data | RxD | | ● | 3 | 2 | 5 | 5 | 6 | 6 | 9 | 7 | 6 |
Data Terminal Ready | DTR | ● | | 20 | 4 | 1 | 3 | 2 | 2 | 7 | 3 | 9 |
Carrier Detect | DCD | | ● | 8 | 1 | — | 2 | 7 | 7 | 10 | 8 | 10 (alt 2) |
Data Set Ready | DSR | | ● | 6 | 6 | 6 | 1 | 8 | 5 | 9 | 2 (alt 10) |
Ring Indicator | RI | | ● | 22 | 9 | — | — | — | 2 | 10 | 1 |
Request To Send | RTS | ● | | 4 | 7 | — | 8 | 1 | 1 | 4 | 2 | 3 |
Clear To Send | CTS | | ● | 5 | 8 | — | 7 | 8 | 5 | 3 | 6 | 8 |
Common Ground | G | common | 7 | 5 | 3,4 | 4 | 4,5 | 4 | 6 | 5 | 7 |
Protective Ground | PG | common | 1 | — | — | — | — | — | — | 1 | 4 |
Null modem cables and diagrams
Signal Name and Abbreviation | DB-25 Pin | DE-9 Pin | Direction | DE-9 Pin | DB-25 Pin | Signal Name Abbreviation |
---|
Frame Ground (chassis) | FG | 1 | – | | – | 1 | FG |
Transmitted Data (TD) | TxD | 2 | 3 | → | 2 | 3 | RxD |
Received Data (RD) | RxD | 3 | 2 | ← | 3 | 2 | TxD |
RS-232 Request to Send | RTS | 4 | 7 | → | 8 | 5 | CTS |
RS-232 Clear To Send | CTS | 5 | 8 | ← | 7 | 4 | RTS |
Signal Ground | SG | 7 | 5 | | 5 | 7 | SG |
Data Set Ready | DSR | 6 | 6 | ← | 4 | 20 | DTR |
Data Carrier Detect (CD) | DCD | 8 | 1 |
Data Terminal Ready | DTR | 20 | 4 | → | 1 | 8 | DCD |
6 | 6 | DSR |
USB connectors and pinouts
USB 1.x/2.0 standard pinoutPin | Name | Cable color | Description |
---|
1 | VBUS | Red (Orange*) | +5 V |
2 | D− | White (Gold*) | Data − |
3 | D+ | Green | Data + |
4 | GND | Black (Blue*) | Ground |
USB 1.x/2.0 Mini/Micro pinoutPin | Name | Cable color | Description |
---|
1 | VBUS | Red | +5 V |
2 | D− | White | Data − |
3 | D+ | Green | Data + |
4 | ID | None | Permits distinction of host connection from slave connection * host: connected to Signal ground * slave: not connected |
5 | GND | Black | Signal ground |
Parallel Printer Pinout