| model name | description | filename |
| release notes of all releases incl. v1.18 | 336s_118.txt | |
| Drivers | Windows 9x | FTP-Directory |
| U-336E Manual | external modem, with LEDs | 336e_118.zip |
| U-336S Manual | external modem, with LCD | 336s_118.zip |
| U-336R Manual | modem card for RS-1612 rack + NMS | 336r_118.zip |
| U-336RE | modem card for RS-1612 rack | 336re118.zip |