Cudy AC 650Mbps USB WiFi Adapter for PC 5GHz 2 4GHz Wireless Dongle WiFi USB Wireless Adapter for

Haven't tested whether it gets the advertised speeds because I don't really need those and likely never will. This is connected to a Banana Pi M4 Zero to act as the upstream wifi (internal wifi is configured as hotspot/AP). For that purpose, it works great. Plug and play and was immediately detected. Seems to be using a Realtek chipset internally. Linux bananapim4zero 6.12.58-current-sunxi64 #3 SMP Thu Nov 13 20:34:41 UTC 2025 aarch64 aarch64 aarch64 GNU/Linux Bus 003 Device 002: ID 0bda:c811 Realtek Semiconductor Corp. 802.11ac NIC Here's the output if "iw phy" since these are nice to know before buying in case you need specific wireless capabilities for your project. Wiphy phy1 wiphy index: 1 max # scan SSIDs: 9 max scan IEs length: 2304 bytes max # sched scan SSIDs: 0 max # match sets: 0 Retry short limit: 7 Retry long limit: 4 Coverage class: 0 (up to 0m) Device supports AP-side u-APSD. Supported Ciphers: * WEP40 (00-0f-ac:1) * WEP104 (00-0f-ac:5) * TKIP (00-0f-ac:2) * CCMP-128 (00-0f-ac:4) * CMAC (00-0f-ac:6) * GCMP-128 (00-0f-ac:8) * GCMP-256 (00-0f-ac:9) * CCMP-256 (00-0f-ac:10) * GMAC-128 (00-0f-ac:11) * GMAC-256 (00-0f-ac:12) * CMAC-256 (00-0f-ac:13) Available Antennas: TX 0 RX 0 Supported interface modes: * IBSS * managed * AP * monitor * P2P-client * P2P-GO Band 1: Capabilities: 0x1862 HT20/HT40 Static SM Power Save RX HT20 SGI RX HT40 SGI No RX STBC Max AMSDU length: 7935 bytes DSSS/CCK HT40 Maximum RX AMPDU length 65535 bytes (exponent: 0x003) Minimum RX AMPDU time spacing: 16 usec (0x07) HT Max RX data rate: 150 Mbps HT TX/RX MCS rate indexes supported: 0-7 Bitrates (non-HT): * 1.0 Mbps * 2.0 Mbps * 5.5 Mbps * 11.0 Mbps * 6.0 Mbps * 9.0 Mbps * 12.0 Mbps * 18.0 Mbps * 24.0 Mbps * 36.0 Mbps * 48.0 Mbps * 54.0 Mbps Frequencies: * 2412.0 MHz [1] (16.0 dBm) * 2417.0 MHz [2] (16.0 dBm) * 2422.0 MHz [3] (16.0 dBm) * 2427.0 MHz [4] (16.0 dBm) * 2432.0 MHz [5] (16.0 dBm) * 2437.0 MHz [6] (16.0 dBm) * 2442.0 MHz [7] (16.0 dBm) * 2447.0 MHz [8] (16.0 dBm) * 2452.0 MHz [9] (16.0 dBm) * 2457.0 MHz [10] (16.0 dBm) * 2462.0 MHz [11] (16.0 dBm) * 2467.0 MHz [12] (16.0 dBm) (no IR) * 2472.0 MHz [13] (16.0 dBm) (no IR) * 2484.0 MHz [14] (disabled) Band 2: Capabilities: 0x862 HT20/HT40 Static SM Power Save RX HT20 SGI RX HT40 SGI No RX STBC Max AMSDU length: 7935 bytes No DSSS/CCK HT40 Maximum RX AMPDU length 65535 bytes (exponent: 0x003) Minimum RX AMPDU time spacing: 16 usec (0x07) HT Max RX data rate: 150 Mbps HT TX/RX MCS rate indexes supported: 0-7 VHT Capabilities (0x03c00022): Max MPDU length: 11454 Supported Channel Width: neither 160 nor 80+80 short GI (80 MHz) +HTC-VHT VHT RX MCS set: 1 streams: MCS 0-9 2 streams: not supported 3 streams: not supported 4 streams: not supported 5 streams: not supported 6 streams: not supported 7 streams: not supported 8 streams: not supported VHT RX highest supported: 434 Mbps VHT TX MCS set: 1 streams: MCS 0-9 2 streams: not supported 3 streams: not supported 4 streams: not supported 5 streams: not supported 6 streams: not supported 7 streams: not supported 8 streams: not supported VHT TX highest supported: 434 Mbps VHT extended NSS: not supported Bitrates (non-HT): * 6.0 Mbps * 9.0 Mbps * 12.0 Mbps * 18.0 Mbps * 24.0 Mbps * 36.0 Mbps * 48.0 Mbps * 54.0 Mbps Frequencies: * 5180.0 MHz [36] (13.0 dBm) * 5200.0 MHz [40] (13.0 dBm) * 5220.0 MHz [44] (13.0 dBm) * 5240.0 MHz [48] (13.0 dBm) * 5260.0 MHz [52] (13.0 dBm) (radar detection) * 5280.0 MHz [56] (13.0 dBm) (radar detection) * 5300.0 MHz [60] (13.0 dBm) (radar detection) * 5320.0 MHz [64] (13.0 dBm) (radar detection) * 5500.0 MHz [100] (13.0 dBm) (radar detection) * 5520.0 MHz [104] (13.0 dBm) (radar detection) * 5540.0 MHz [108] (13.0 dBm) (radar detection) * 5560.0 MHz [112] (13.0 dBm) (radar detection) * 5580.0 MHz [116] (13.0 dBm) (radar detection) * 5600.0 MHz [120] (13.0 dBm) (radar detection) * 5620.0 MHz [124] (13.0 dBm) (radar detection) * 5640.0 MHz [128] (13.0 dBm) (radar detection) * 5660.0 MHz [132] (13.0 dBm) (radar detection) * 5680.0 MHz [136] (13.0 dBm) (radar detection) * 5700.0 MHz [140] (13.0 dBm) (radar detection) * 5720.0 MHz [144] (disabled) * 5745.0 MHz [149] (13.0 dBm) * 5765.0 MHz [153] (13.0 dBm) * 5785.0 MHz [157] (13.0 dBm) * 5805.0 MHz [161] (13.0 dBm) * 5825.0 MHz [165] (13.0 dBm) * 5845.0 MHz [169] (disabled) * 5865.0 MHz [173] (disabled) * 5885.0 MHz [177] (disabled) Supported commands: * new_interface * set_interface * new_key * start_ap * new_station * set_bss * join_ibss * set_pmksa * del_pmksa * flush_pmksa * remain_on_channel * frame * set_channel * connect * disconnect WoWLAN support: * wake up on anything (device continues operating normally) software interface modes (can always be added): * monitor interface combinations are not supported Device supports SAE with AUTHENTICATE command Device supports scan flush. Device supports randomizing MAC-addr in scans. max # scan plans: 1 max scan plan interval: -1 max scan plan iterations: 0 Supported TX frame types: * IBSS: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0 * managed: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0 * AP: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0 * AP/VLAN: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0 * P2P-client: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0 * P2P-GO: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0 Supported RX frame types: * IBSS: 0xd0 * managed: 0x40 0xb0 0xd0 * AP: 0x00 0x20 0x40 0xa0 0xb0 0xc0 0xd0 * AP/VLAN: 0x00 0x20 0x40 0xa0 0xb0 0xc0 0xd0 * P2P-client: 0x40 0xd0 * P2P-GO: 0x00 0x20 0x40 0xa0 0xb0 0xc0 0xd0 Supported extended features: * [ RRM ]: RRM Read more

I like these for troubleshooting WiFi. They work right out of the box with no driver installation on both Windows and Linux. They are not the fastest connection you’ll most likely see 250mps on a fast connection. Good for people who need a solution for a laptop with a bad network card or a desktop with no room for a pcie card. Read more

Edit: While my overall experience with the dongle as reviewed below was a 2 star experience, customer support and assistance was fantastic. For the price and knowing they stand behind their product, it is hard to go wrong with this adapter. This worked okay for a few months. But about 4 months in it totally died. It was relatively stable up to that point, but nothing to brag about which is expected for this price point. I would have liked to get at least a couple years out of it. Read more

This little adapter was perfect - I remember the days back when a USB wireless adapter would stick out around 6 inches from the back of a desktop computer. Not anymore! It's extremely small, and I was able to plug into an open USB port. After completing a speed test, I was consistently receiving 600-615Mbps, which considering real world conditions, I thought was amazing. I was around 50' from my router when completing the speed test, so the range is very good as well, indicating the power to the radio in the receiver is adequate. Overall, I highly reccomend this product! Read more

I have a windows 10 laptop pro and I use it mostly for internet and photos. I was constantly getting disconnected with the internal adapter. I tried replacing it and though that was supposed to work, it did not and I was super frustrated (not a complete idiot, so whats up). I decided on this usb adapter because I need simple and easy. Plugged it in, and put in small cd at the same moment. Takes a couple of moments to start, a couple of minutes of install. Now, its faster than the original when that did work. Note, it does not work when the pc is first turned on, it has to load as its not hard wired/internal as it were. But I leave it in all the time and stays connnected without a single problem. Printing, internet, etc all perfect. I would absolutely recommend and would buy again. Cant beat the price and small size. Read more

I had a 10 year old HP notebook that didn’t have a functioning wifi transmitter/receiver. I have Lubuntu installed for the operating system. This wifi adapter was plug and play without having to install drivers. My old laptop is usable again. Read more