| Manufacturer | Part Number | Description |
|---|---|---|
| Contek Microelectronics | U585 | (U584 - U587) Voltage conversion regulator |
| Contek Microelectronics | U584 | (U584 - U587) Voltage conversion regulator |
| Contek Microelectronics | U587 | (U584 - U587) Voltage conversion regulator |