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MSI
MSI 914-8660-001 Herald-BE Wi-Fi 7 adapter
Adds Wi-Fi 7 and Bluetooth 5.4 to a desktop via PCI Express with an external antenna for 2.4 GHz, 5 GHz and 6 GHz bands
- TypePCIE Wi-Fi Adapter
- ColorBlack
- StandardsIEEE 802.11be
- WiFi GenerationWi-Fi 7
- InterfacePCI Express
- Frequency Band2.4 GHz / 5 GHz / 6 GHz
- Wi-Fi 7 speeds up to 5.8 Gbps for fast streaming and downloads
- Bluetooth 5.4 adds modern peripheral support with lower latency
- External antenna improves signal strength and coverage flexibility
- PCI Express interface fits desktop PCs running Windows 10 or 11
- 320 MHz channels on 6 GHz reduce congestion in busy networks
Herald-BE Wi-Fi 7 adapter for desktop PCs
The MSI Herald-BE adds Wi-Fi 7 and Bluetooth 5.4 to a desktop through a PCI Express slot. It targets builders who want the 6 GHz band and multi-link operation without replacing the motherboard. Windows 11 is required for Wi-Fi 7 features; Windows 10 works for Bluetooth and legacy bands.
5.8 Gbps peak throughput with 320 MHz channels
The NCM865 module reaches 5.8 Gbps using 320 MHz channel width on 6 GHz and 4096-QAM modulation. The 2.4 GHz and 5 GHz bands remain available for compatibility. Throughput drops when the 6 GHz band is congested or when the router lacks 320 MHz support.
PCI Express card with external antenna
The half-height card fits a standard PCIe slot and ships with a high-gain external antenna for flexible placement. It needs a free slot and Windows 11 or 10. The external antenna frees the rear I/O from fixed whip antennas and improves coverage in metal cases.
Highlights
- Wi-Fi 7 speeds up to 5.8 Gbps for fast streaming and downloads
- Bluetooth 5.4 adds modern peripheral support with lower latency
- External antenna improves signal strength and coverage flexibility
- PCI Express interface fits desktop PCs running Windows 10 or 11
- 320 MHz channels on 6 GHz reduce congestion in busy networks
Specifications
| Brand | MSI |
|---|---|
| Model | HERALD BE9400 WiFi 7 PCIe Card |
| Part Number | 914-8660-001 |
| Type | PCIE Wi-Fi Adapter |
| Color | Black |
| Standards | IEEE 802.11be |
| WiFi Generation | Wi-Fi 7 |
| Interface | PCI Express |
| Frequency Band | 2.4 GHz / 5 GHz / 6 GHz |
| Antenna | External Antenna |
| Bluetooth | Bluetooth 5.4 |
| System Requirements | Windows 11/10 (Plug & Play) (WiFi 7 requires Win11) |
| Dimensions | 2.6" x 0.7" x 4.72" |
| Shipping weight | 0.27 kg |
| Package size | 216 × 171 × 57 mm |
Questions about this item
Will the PCI Express slot on my older motherboard work with this Wi-Fi 7 adapter?
The card uses a PCI Express interface and Windows 10 or 11 for plug-and-play installation; Wi-Fi 7 features require Windows 11.
How can I confirm the 320 MHz channel width is active on the 6 GHz band after setup?
In Windows 11 network properties, check the link speed and channel width fields — they should show 320 MHz when connected to a compatible 6 GHz access point.
Does the box include the external antenna or do I need to buy one separately?
The product ships with a high-gain external antenna included; no separate antenna purchase is required.
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