HP t505 Hardware Reference Manual page 22

CAUTION:
To prevent severe equipment damage, carefully verify the location of the COM Port
Jumper before you configure it. See Figure 2-4 Serial Port Jumper Locations on the System Board
on page 14 for locations.
NOTE:
The jumpers in the following table are in the same orientation illustrated in Figure 2-4 Serial
Port Jumper Locations on the System Board on page 14.
Table 2-3 Configuring Serial Port Power
16 Chapter 2 Hardware Changes