
External Interfaces Description
Quick Reference Guide
9
USB Host Ports
The DLR-PR001 reader has 2 USB 2.0 high speed ports
that can be used to connect external devices like Wi-Fi or
Bluetooth adapters, GPS receivers or flash pen drives.
Each port is able to provide up to 500mA supply current at
5VDC voltage.
The connector is a 4 pins Type A receptacle:
Figure 7. USB connector type A
Pin #
Signal
Description
1
Vbus
+5V DC USB bus
2
D-
D- signal
3
D+
D+ signal
4
GND
Ground
Shell
External shell