Is this the correct version that can supply up to 3a on both the 12v and 5v supply? or can it only supply 2a? why is this covered in picture?

Yes it is. The picture is just a generic photo of an UpBright adapter and I think you'll find the input and output voltage and current covered up or illegible in the phohto in most of their ads. The one I received through this ad was a JenTec JTA0512 which lists the output as "DC Output: +5V/3A, +12V/3A". Mine was for a DNS-323 and it works great so far (~ 6 months).

Unit Count	1.0 Count
Number of Items	1
Energy Specifications Met	CE
Output Current	3 Amps
Output Voltage	5 Volts (DC)
Power Source	Corded Electric
Current Rating	3 Amps
Frequency Range	60 hertz
Main Power Connector Type	2 Pin
Number of Power Levels	1
Input Voltage	120 Volts (AC)
Amperage	3 Amps
Wattage	51 watts
Connectivity Technology	HDMI
Connector Type Used on Cable	barrel connector
Compatible Devices	Adapter
Additional Features	Short Circuit Protection

Upbright 4-Pin AC/DC Adapter for D-Link DNS-321 DNS-326 DNS-323 DNS-726-4 DNS-722-4 DLink DNS321 DNS326 DNS323 DNS726 4 DNS722 4 2-Bay Network Storage NAS Enclosure HDD HD 5V 3A 12V 3A Power Supply

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