NXP Semiconductors
UM11036
Point of Sales (POS) Reader Solution - Quick Start Guide
UM11036
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© NXP Semiconductors N.V. 2017. All rights reserved.
User manual
COMPANY PUBLIC
Rev. 1.2 — 7 February 2017
406512
14 of 56
Fig 15. Power supply connector location – Mini USB
2.4 TWR-ELEV Power Switch
A switch is mounted on the TWR-ELEV board. This switch is used to turn ON or OFF the
power supply from the TWR-ELEV USB connector.
For the SLN-POS-RDR to operate, the switch has to be in the ON position (top) shown in
Fig 16, otherwise there will be no power from this TWR-ELEV connector.
Fig 16. TWR-ELEV – Power switch ON position