| UC Logic |
 |
 |
| Umax |
|
|
| UMC |
|
|
| Unex |
|
|
| Unicell |
|
|
| Unicorn Computer |
|
|
| Unique Hardware |
|
|
| Unisys |
|
|
| Unisys Brazil |
|
|
| Universal Scientific-USI |
|
|
| Upson |
|
|
| US Logic |
|
|
| USRobotics |
|
|
| USRobotics – 3COM |
|
|
| Utobia |
|
|
| Utron |
|
|
