The data pins start at RD1, GD1 and BD1 and end at RD5, GD5 and BD5. Pay particular attention to pins 16–20: the clock sits between the two grounds, followed by latch and output enable.
Connector pin assignments
| Pin | Signal | Pin | Signal |
|---|---|---|---|
| 1 | RD1 | 2 | GD1 |
| 3 | BD1 | 4 | RD2 |
| 5 | GD2 | 6 | BD2 |
| 7 | RD3 | 8 | GD3 |
| 9 | BD3 | 10 | RD4 |
| 11 | GD4 | 12 | BD4 |
| 13 | RD5 | 14 | GD5 |
| 15 | BD5 | 16 | GND |
| 17 | CLK | 18 | GND |
| 19 | LAT | 20 | OE |
Board photo

Frequently asked questions
Where are the ground pins on the HUB50(20)?
Pins 16 and 18 are GND. Pin 17 between them is CLK.
Which pins are latch and output enable?
Pin 19 is LAT and pin 20 is OE. Check the numbering against the mating connector before making the connection.
Does this 20-pin definition include address lines A, B, C or D?
No pins in this map are labeled A, B, C or D. If your module requires those signals on this connector, compare its complete interface definition before selecting the card.




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