IBM F50 RS/6000 7025 - Manual (Page 103)

Selecting option 1 (3Com,3C905) displays the following 100Mb Ethernet
configuration menus:
3Com Etherlink Fast XL
1. Media Type [Auto]
2. Full Duplex [Auto]
.------.
|X=Exit|
------'
Selecting the Media Type option allows you the change the media employed by the
Ethernet adapter:
.----------------.
| MEDIA TYPE
|
| 1. 1 BaseT |
| 2. 1 Base TX |
| 3. Auto |
----------------'
Chapter 3. System Management Services 3-35