What are the Advantages of the QWA-AC2600 wireless network card? Turn your Ubuntu/Linux PC or QNAP NAS into a high-performance and secure wireless access point/base station. The QWA-AC2600 is a 2.4/5 GHz Dual Band Dual Concurrent (DBDC), 4 x 4 Multi-user MIMO (MU-MIMO), low-profile PCI Express (PCI