With the UltraPort connector being nothing else than a standard USB 1.1 interface with a proprietary connector, it should in theory be possible to transform any USB 1.1 device into an UltraPort device.
This idea is undermined by the fact that a mechanical adapter comes with every UltraPort device, that transforms the UltraPort connector into a standard USB connector.
Pin Layout comparison
The following UltraPort pin layout has been discovered through measuring the UltraPort of a ThinkPad X21. It is not very well tested, but worked well for the author of this information.
The information on the USB Type A connector pin layout has been copied from Wikipedia.
UltraPort connector
| 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 |  
| 1 | 
2 | 
3 | 
4 | 
5 | 
6 | 
7 | 
8 | 
 | 
9 | 
10 | 
11 | 
12 | 
13
 |   
| GND
 | 
0
 | 
VCC
 | 
VCC
 | 
GND
 | 
D+
 | 
D-
 | 
GND
 | 
.
 | 
?
 | 
?
 | 
?
 | 
0
 | 
GND
 |   
 |   
 | 
Standard USB Type A connector
 | 
| Pin | 
Name | 
Description
 |  
| 1,5,8,13 | 
GND | 
Ground
 |  
| 2,12 | 
0 | 
probably not connected
 |  
| 3,4 | 
VCC | 
+5 V DC
 |  
| 6 | 
D+ | 
Data +
 |  
| 7 | 
D- | 
Data -
 |  
| 9,10,11 | 
? | 
unidentified
 |  
 | 
. | 
it is fastener not a pin
 |   
 | 
| Pin | 
Name | 
Cable color | 
Description
 |  
| 1 | 
VCC | 
red | 
+5 V DC
 |  
| 2 | 
D+ | 
green | 
Data +
 |  
| 3 | 
D- | 
white | 
Data -
 |  
| 4 | 
GND | 
black | 
Ground
 |   
 |