USB to DB9 Adapter
A USB to Serial DB9 adapter is supplied with each MIO/UMIO. The DB9 connector on the adapter is male
and can be used in conjunction with the Console RJ45 Cable and DB9 Adapter to connect a laptop or
workstation to the RJ45 port on the MIO/UMIO.
Figure 16: USB to Serial DB9 Adapter
DB9 connector (male)2USB 1.1 Type B connector1
Table 11: USB to DB9 Adapter - DB9 Pinouts
Console PortSignal typeSignal DescriptionDB9 Pin
UnusedInputData Carrier Detect (DCD)1
TXInputReceive Data (RX)2
RXOutputTransmit Data (TX)3
UnusedOutputData Terminal Ready (DTR)4
GroundGroundSignal Ground (SGND)5
UnusedInputData Set Ready (DSR)6
UnusedOutputRequest To Send (RTS)7
UnusedInputClear To Send (CTS)8
UnusedInputRing Indicator (RI)9
ASR 5500 Installation Guide
64
MIO Port Cabling
USB to DB9 Adapter