7
2.2.3 Rear View
TJ-4420TN/TJ-4520TN/TJ-4620TN
1.
External Label Entry Slot
2.
RS-232C Serial Port
3.
Ethernet Port
4.
USB Port (USB 2.0/Hi-Speed Mode)
5.
microSD Card Slot
1
6.
Wi-Fi and Bluetooth Interface Expansion Port
2
7.
Power Switch
8.
Power Cord Socket
1
For the recommended microSD card types, see section
2
For the optional WLAN / BT Interface (PA-WB-001).