Dual Band 2.4 and 5 Ghz, 450 Mbps over either channel. PCI Express Adapter. The link is to the Amazon.ca page for the product; https://www.amazon.ca/TP-Link-TL-WDN4800-Wireless-Express-Adapter/dp/B007GMPZ0A/ref=sr_1_14?dchild=1&keywords=n900+pci+express+adapter&qid=1609621737&sr=8-14 In original box with low profile bracket and cd with drivers.