Question about QNAP QSW-2104-2T, 2-port 10GbE switch

Switching Adapter
MODEL DSA-12PF11-12 FEU 120100
INPUT 100-240V ~ 50/60Hz 0.5.4
OUTPUT + 12.0V = 1 0A, 12.0W

on my powersupply is written 12V/1A.
i suggest to buy a 2A one