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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 9.1 Recommended microSD Cards.
2
For the optional WLAN / BT Interface (PA-WB-001).
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