2.4GHz radio: Two spatial stream Single User (SU) MIMO for up to 574Mbps wireless data rate with 2SS HE40 802.11ax client devices (287Mbps for HE20)

5GHz radio: Two spatial stream Single User (SU) MIMO for up to 1.2Gbps wireless data rate with 2SS HE80 802.11ax client devices

Up to 256 associated client devices per radio, and up to 16 BSSIDs per radio

Supported frequency bands (country-specific restrictions apply):

• • 2.400 to 2.4835GHz ISM
  • 5.150 to 5.250GHz U-NII-1
  • 5.250 to 5.350GHz U-NII-2A
  • 5.470 to 5.725GHz U-NII-2C
  • 5.725 to 5.850GHz U-NII-3/ISM
  • 5.850 to 5.895GHz U-NII-4

Available bands and channels: Dependent on configured regulatory domain (country)

Dynamic frequency selection (DFS) optimizes the use of available RF spectrum in the 5GHz band

Supported radio technologies:

• • 802.11b: Direct-sequence spread-spectrum (DSSS)
  • 802.11a/g/n/ac: Orthogonal frequency-division multiplexing (OFDM)
  • 802.11ax: Orthogonal frequency-division multiple access (OFDMA) with up to 8 resource units

Supported modulation types:

• • 802.11b: BPSK, QPSK, CCK
  • 802.11a/g/n: BPSK, QPSK, 16-QAM, 64-QAM and 256-QAM (proprietary extension)
  • 802.11ac: BPSK, QPSK, 16-QAM, 64-QAM, 256-QAM and 1024-QAM (proprietary extension)
  • 802.11ax: BPSK, QPSK, 16-QAM, 64-QAM, 256-QAM and 1024-QAM

802.11n high-throughput (HT) support: HT20/40

802.11ac very high throughput (VHT) support: VHT20/40/80

802.11ax high efficiency (HE) support: HE20/40/80

Supported data rates (Mbps):

• • 802.11b: 1, 2, 5.5, 11
  • 802.11a/g: 6, 9, 12, 18, 24, 36, 48, 54
  • 802.11n: 6.5 to 300 (MCS0 to MCS15, HT20 to HT40), 400 with 256-QAM (proprietary extension)
  • 802.11ac: 6.5 to 867 (MCS0 to MCS9, NSS = 1 to 2, VHT20 to VHT80); 1,083 with 1024-QAM (MCS10 and MCS11, proprietary extension)
  • 802.11ax (2.4GHz): 3.6 to 574 (MCS0 to MCS11, NSS = 1 to 2, HE20 to HE40)
  • 802.11ax (5GHz): 3.6 to 1,201 (MCS0 to MCS11, NSS = 1 to 2, HE20 to HE80)

802.11n/ac packet aggregation: A-MPDU, A-MSDU

Transmit power: Configurable in increments of 0.5 dBm

Maximum (aggregate, conducted total) transmit power (limited by local regulatory requirements):

• • Per radio (2.4GHz / 5GHz): +21 dBm (18dBm per chain)
  • Note: conducted transmit power levels exclude antenna gain. For total (EIRP) transmit power, add antenna gain.

Advanced Cellular Coexistence (ACC) minimizes the impact of interference from cellular networks

Maximum ratio combining (MRC) for improved receiver performance

Cyclic delay/shift diversity (CDD/CSD) for improved downlink RF performance

Space-time block coding (STBC) for increased range and improved reception

Low-density parity check (LDPC) for high-efficiency error correction and increased throughput

Transmit beam-forming (TxBF) for increased signal reliability and range

802.11ax Target Wait Time (TWT) to support low-power client devices

• • Combining the patterns of each of the antennas of the MIMO radios, the peak gain of the combined, average pattern is 1.5dBi in 2.4GHz and 3.9dBi in 5GHz.

• • Auto-sensing link speed (10/100/1000BASE-T) and MDI/MDX
  • POE-PD: 48Vdc (nominal) 802.3af POE (class 3 or higher)
  • 802.3az Energy Efficient Ethernet (EEE)

USB 2.0 host interface (Type A connector)

• • Capable of sourcing up to 100mA / 500mW to an attached device

Built-in Trusted Platform Module (TPM) for enhanced security and anti-counterfeiting

Visual indicators (two multi-color LEDs): for System and Radio status

Reset button: factory reset, LED mode control (normal/off)

Serial console interface (proprietary, micro-B USB physical jack)

Automatic thermal shutdown and recovery function

Power sources are sold separately; see the 503 Series Ordering Guide for details

Maximum (worst-case) power consumption: 10.9W

Maximum (worst-case) power consumption in idle mode: 4.7W

Both numbers assume no power is drawn from the USB interface

• • Drawing 0.5W from the USB interface increases max AP power consumption by up to 0.7W

• • 145mm (W) x 145mm (D) x 51mm (H)
  • 270g

Dimensions/weight (AP-503; unit without mount bracket):

• • 145mm (W) x 145mm (D) x 35mm (H)
  • 255g

Dimensions/weight (AP-503; shipping):

• • 196mm (W) x 183mm (D) x 67mm (H)
  • 515g

• • Temperature: 0°C to +40°C / +32°F to +104°F
  • Relative humidity: 5% to 95%
  • ETS 300 019 class 3.2 environments
  • AP is plenum rated for use in air-handling spaces

Storage conditions

• • Temperature: -25°C to +55°C / -13°F to +131°F
  • Relative humidity: 10% to 100%
  • ETS 300 019 class 1.2 environments

Transportation conditions

• • Temperature: -40°C to +70°C / -40°F to +158°F
  • Relative humidity: up to 95%
  • ETS 300 019 class 2.3 environments

CE Marked

RED Directive 2014/53/EU

EMC Directive 2014/30/EU

Low Voltage Directive 2014/35/EU

UL/IEC/EN 60950

IEC/EN 62368-1

For more country-specific regulatory information and approvals, please see your Aruba representative.

Wi-Fi Alliance (WFA):

• • Wi-Fi CERTIFIED a, b, g, n, ac
  • Wi-Fi CERTIFIED 6
  • WPA, WPA2 and WPA3 – Enterprise with CNSA option, Personal (SAE), Enhanced Open (OWE)
  • WMM, WMM-PS, Wi-Fi Agile Multiband
  • Passpoint (release 2)

Ethernet Alliance (POE, PD device, class 3)

ArubaOS 10.5.0.0