| Type of transition | adapter |
| Symbol | Manufacturer | Structure |
|---|---|---|
| GCM-9M9M | VCOM | D-Sub 9pin plug; both sides |
| GCM-9F9F | VCOM | D-Sub 9pin socket; both sides |
| GCM-25M25M | VCOM | D-Sub 25pin plug; both sides |
| GCM-25F25F | VCOM | D-Sub 25pin socket; both sides |
| GCM-15M15MHD | VCOM | D-Sub 15pin HD plug; both sides |
| GCM-15F15FHD | VCOM | D-Sub 15pin HD socket; both sides |