HP Neoware e140 - Thin Client User Manual page 49

Both
Hardware
Half Duplex
Factory default: Unchecked
The setting of this option determines whether keyboard entered
characters are immediately displayed on the screen when transmitted
to the host (otherwise known as local echo). When unchecked,
characters are not displayed locally when they are transmitted unless
the host 'echoes' them back.
Buffer Size
Factory default: 4096
This specifies the size of the buffer used for temporary storage of
input and output data.
Block on Full
Factory default: Unchecked
This determines what happens when the buffer becomes full.
Checking this option will cause TeemTalk to block all actions until
the buffer is ready to receive new data.
XON/XOFF on transmitted & received data.
RTS/CTS hardware flow control.
Host Connection
Serial Transport 33