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White square indoor Wi-Fi 6 access point with 13 internal antennas

Fortinet

Fortinet FAP-831F-A Wi-Fi 6 access point

SKU CH-6S1M-N1KKK MPN FAP-831F-A

Tri-radio indoor access point with 13 internal antennas delivers Wi-Fi 6 speeds up to 1.147 Gbps on 2.4 GHz and 4.8 Gbps on 5 GHz while scanning both bands continuously

  • ColorWhite
  • # of Usersup to 512 clients per radio
  • StandardsIEEE 802.11ax
  • WiFi GenerationWi-Fi 6
  • Wireless Data RatesUp to 1.147 Gbps+4.8 Gbps
  • Antenna13 Internal Antennas Details: 4x 2.4GHz band WiFi + 8x 5GHz

Options FAP831FA

  • Enterprise throughput with Wi‑6 tri‑radio design delivering up to 4.8 Gbps
  • 13 internal antennas enable 8×8 MU‑MIMO for dense client environments
  • 24 simultaneous SSIDs segment traffic across local‑bridge mesh and tunnel modes
  • Dedicated scanning radio monitors both bands 24/7 while users stay connected
  • 5 Gbps and 1 Gbps Ethernet ports plus PoE diversity for resilient wired uplinks

FortiAP 831F Indoor Access Point

The FortiAP 831F is an enterprise-class Wi-Fi 6 indoor access point with three radios and eight spatial streams. It supports up to 512 clients per radio and delivers wireless data rates of 1.147 Gbps on the 2.4 GHz band and 4.8 Gbps on the 5 GHz band. Thirteen internal antennas provide coverage for high-density environments.

Suited for high-density enterprise deployments

This access point suits organisations that require continuous dual-band scanning for security monitoring while serving clients on both 2.4 GHz and 5 GHz bands. It also supports BLE beacon and locationing applications. Buyers who need outdoor-rated hardware or a unit that includes a power supply should consider other options.

Three-radio tri-band design with dedicated scanning

The defining specification is the three-radio architecture: a 4x4 2.4 GHz radio, an 8x8 5 GHz radio and a dedicated 1x1 scanning radio. This allows simultaneous client access and full-time spectrum analysis without a separate sensor. Uplink connectivity uses a 5 Gbps RJ45 port and a second 1 Gbps RJ45 port for PoE diversity.

Highlights

  • Enterprise throughput with Wi‑6 tri‑radio design delivering up to 4.8 Gbps
  • 13 internal antennas enable 8×8 MU‑MIMO for dense client environments
  • 24 simultaneous SSIDs segment traffic across local‑bridge mesh and tunnel modes
  • Dedicated scanning radio monitors both bands 24/7 while users stay connected
  • 5 Gbps and 1 Gbps Ethernet ports plus PoE diversity for resilient wired uplinks

Specifications

BrandFortinet
SeriesFortiAP
ModelFortiAP 831F
Part NumberFAP-831F-A
ColorWhite
# of Usersup to 512 clients per radio
StandardsIEEE 802.11ax
WiFi GenerationWi-Fi 6
Wireless Data RatesUp to 1.147 Gbps+4.8 Gbps
Antenna13 Internal Antennas
Details: 4x 2.4GHz band WiFi + 8x 5GHz band WiFi + I Dual band Scanning + 1x 2.4GHz band BLE
Transmitted PowerRadio 1: 2.4 GHz 27 dBm / 500 mW (4 chains combined)
Radio 2: 5 GHz 25.5 dBm / 354 mW (4 chains combined)
Radio 3: NA
Mounting LocationIndoor
Interface1x 100/1000/2500/5000 Base-T RJ45
1 x 10/100/1000 Base-T RJ45
1x Type 3.0 USB, 1x RS-232 RJ45 Serial Port
Multiple SSIDsSSID Types Supported: Local-Bridge, Mesh, Tunnel
Simultaneous SSIDs: Up to 24
MIMORadio 1 MIMO Chains: 4x4 service
Radio 2 MIMO Chains: 8x8 service in mode 1 or 4x4+4x4 service in mode 2
Radio 3 MIMO Chains: 1x1 frequency scanning
Power SupplySP-FAP400-PA-XX or GPI-130 (not included)
Max Power Consumption33 W
Dimensions9.05 x 89.05 x 2.15 inches (230 x 230 x 55 mm)
Weight2.25 lbs (1.02 kg)
FeaturesWireless Monitoring Capabilities:
Rogue Scan Radio Mode (Dedicated)
WIPS / WIDS Radio Modes (Dedicated)
Packet Sniffer Mode
Spectrum Analyzer
Advanced 802.11 Features:
OFDMA (UL and DL)
Spatial Reuse (BSS Coloring)
UL-MU-MIMO 802.11ax mode
DL-MU-MIMO
Enhanced Target Wake Time (TWT)
ZeroWait DFS /Agile DFS
Shipping weight3.18 kg
Package size305 × 305 × 152 mm

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Questions about this item

Should I pick the single 831F-A model or are there other capacities in this series?

The FAP-831F-A is a single SKU; there are no alternate capacity versions listed for this model.

What does the 1.147 Gbps plus 4.8 Gbps wireless data rate mean when the AP is mounted in an office?

Those are the peak PHY rates for the 2.4 GHz and 5 GHz radios respectively; real-world throughput will be lower due to overhead, interference and client capabilities.

How does the 5.0 Gigabit Ethernet port limit the wired uplink speed?

The 5 Gbps RJ45 port caps the wired backhaul at 5 Gbps; the second RJ45 port provides a 1 Gbps PoE diversity link.

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