The D-subminiature or D-sub is a common type of electrical connector. They are named for their characteristic D-shaped metal shield. When they were introduced, D-subs were among the smallest connectors used on computer systems.
Normal density | High density | Double density | |||
---|---|---|---|---|---|
Name | Pin layout | Name | Pin layout | Name | Pin layout |
DA-15 | 8–7 | DA-26 | 9–9–8 | DA-31 | 10–11–10 |
DB-25 | 13–12 | DB-44 | 15–15–14 | DB-52 | 17–18–17 |
DC-37 | 19–18 | DC-62 | 21–21–20 | DC-79 | 26–27–26 |
DD-50 | 17–16–17 | DD-78 | 20-19-20-19 | DD-100 | 26-25-24-25 |
DE-9 | 5–4 | DE-15 | 5–5–5 | DE-19 | 6–7–6 |
19-pin[note 1] | 10–9 | DF-104[dubious – discuss] | 21-21-21-21-20[1][2] | ||
23-pin[note 1] | 12–11 | ||||
Note that the "High density" and "Double density" classification here is the reverse of floppy disk nomenclature. Here, high density is only somewhat higher than normal, and not as high as double density. |