Document Reference No.: FT_000204
DB9-USB-RS232 Datasheet
Version 1.2
Clearance No.: FTDI# 130
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Connections
2.1
External Connections
2.1.1 USB
The DB9-USB-RS232 module is a downstream USB 2.0 Device. A “USB mini B” receptacle is mounted
inside the module to facilitate connection to an upstream USB Host or Hub.
Pin Number
1
2
3
4
5
Shield
Pin Type
Power
Bidirectional
Bidirectional
ID
Ground
Case Ground
Description
VBUS – USB Power provided from upstream USB Host or Hub
D– = USB data signal, negative polarity
D+ = USB data signal, positive polarity
Not Connected
GND = USB signal ground
Drain = typically connected to the host PC case
Table 2.1 – USB “mini-B” Receptacle Pin-Out
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