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BrandQNAP
ModelQWA-AC2600
TypeExpansion card
DescriptionAC2600 Wireless Dual Band PCIe expansion card
Listed for193 NAS models

Manufacturer notes: Compatible only with PCIe slot #1. Compatible only with PCIe slot #2.  

Compatible NAS models

QNAP (193)

Source: QNAP's official compatibility list. Always check the slot, bracket, OS version and installation notes for your NAS before buying.