does this card connect both 2.4Ghz and 5Ghz at the same time?

Not at the same time but they will show as 2 separate networks

Questions & Answers: Refurbished: TP-LINK Archer Archer T8E IEEE 802.11ac - Wi-Fi Adapter for Desktop Computer - PCI Express - 1.71 Gbit/s - 2.40 GHz ISM - 5 GHz UNII - Internal

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TP-LINK Archer Archer T8E IEEE 802.11ac - Wi-Fi Adapter for Desktop Computer - PCI Express - 1.71 Gbit/s - 2.40 GHz ISM - 5 GHz UNII - Internal

Combined speeds of up to 1750Mbps with next-gen Wireless AC technology
Dual 5GHz (1300Mbps) and 2.4GHz (450Mbps) bands for lag-free HD video streaming and online gaming
3T3R MIMO technology for rel

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