How many client devices can the AIR-AP1840I-D-K9C handle simultaneously?

The AIR-AP1840I-D-K9C can support up to 200 concurrent clients, balancing load across bands to maintain consistent throughput and reduce latency.

What security protocols are integrated in the AIR-AP1840I-D-K9C?

It features WPA3, WPA2 Enterprise, 802.1X authentication, rogue access point detection, and Cisco’s Wireless Intrusion Prevention System (wIPS) for robust network security.

Is the AIR-AP1840I-D-K9C compatible with Cisco wireless controllers?

Yes. It integrates seamlessly with Cisco Catalyst and Cisco 9800 Series wireless controllers for centralized management, policy enforcement, and analytics.

Can I manage the AIR-AP1840I-D-K9C using Cisco DNA Center?

Absolutely. Cisco DNA Center provides zero-touch provisioning, monitoring, and automation for the AIR-AP1840I-D-K9C, streamlining large-scale deployments.

What is the regulatory domain of AIR-AP1840I-D-K9C?

The “D” in AIR-AP1840I-D-K9C denotes the D regulatory domain, compliant with European ETSI regulations and certain Middle East and Africa requirements.

What environmental specifications apply to the AIR-AP1840I-D-K9C?

Operating temperature: –30 °C to 55 °C; humidity: 5% to 95% non-condensing. It meets IP67 standards for dust and water resistance in harsh outdoor conditions.

What are the physical dimensions and weight of the AIR-AP1840I-D-K9C?

Dimensions: 282 × 282 × 100 mm (11.1 × 11.1 × 3.9 in); weight: 2.4 kg (5.3 lb), making it compact and easy to mount on walls or poles.

How do I update the firmware on the AIR-AP1840I-D-K9C?

Use Cisco Enterprise Network Compute System (ENCS) or a wireless controller’s web interface to upload the .tar firmware file, then schedule or apply the upgrade during off-peak hours.

What mounting options are available for the AIR-AP1840I-D-K9C?

It supports wall, ceiling, pole, and mast mounting with included brackets, enabling flexible installation in both indoor and outdoor environments.

What warranty and support does Cisco offer for the AIR-AP1840I-D-K9C?

Cisco provides a limited lifetime warranty on the AP chassis and one year on accessories, plus 90-day Cisco TAC support. Extended service contracts are available.

How does the AIR-AP1840I-D-K9C handle heat dissipation in extreme climates?

It features a ruggedized, finned aluminum enclosure and internal heat sinks, ensuring passive cooling and reliable operation in temperatures up to 55 °C.

Where can I purchase the Cisco AIR-AP1840I-D-K9C access point?

Authorized Cisco partners, resellers, and online marketplaces list the AIR-AP1840I-D-K9C. For best pricing and support, contact a certified Cisco distributor.

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Price: 733.00 USD
Availability: InStock
Rating: 4.4 (7 reviews)

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AIR-AP1840I-D-K9C Overview

AIR-AP1840I-D-K9C is a high-performance wireless access point engineered for indoor enterprise environments. It operates across dual frequency bands—2.4GHz and 5GHz—supporting the Wi-Fi 5 (802.11ac) standard to deliver data rates of up to 1Gbps. Featuring advanced MU-MIMO and beamforming capabilities, this access point ensures efficient, high-capacity connectivity that keeps pace with modern wireless demands.

AIR-AP1840I-D-K9C incorporates an internal omnidirectional antenna with a typical gain of 3dBi, offering reliable coverage in high-density office settings and large indoor spaces. Designed for flexible deployment, it supports both ceiling and wall mounting options and is powered via PoE, making it an ideal choice for seamless integration into existing network infrastructures.

AIR-AP1840I-D-K9C price is $733.00, a 47.5% saving from the Cisco list price of $1,396.00. AIR-AP1840I-D-K9C is in stock and available for next-day dispatch. (terms applied)

Request bulk order quote for AIR-AP1840I-D-K9C for additional pricing. Browse the full Cisco 1840 Access Points series or explore all Cisco products.

AIR-AP1840I-D-K9C Specifications

Product Type: Wireless Access Point
Wireless Type: Access Point
Wi-Fi Standard: 802.11a/b/g/n/ac
Frequency Bands: 2.4GHz / 5GHz
Data Rate: 1Gbps
Max Range: N/A
Coverage Area: N/A
Connector Type: RJ-45
Antenna Type: Omnidirectional
Antenna Gain: 3dBi
MIMO Technology: MU-MIMO
Beamforming: Yes
Mounting Options: Ceiling Mount / Wall Mount
Power Supply: PoE
Mesh Networking: No
Ethernet Port: 1x Gigabit
Max Number of Devices Supported: N/A
Protocols Supported: 802.11a/b/g/n/ac / Ethernet
Management Features: On-Premises / SNMP
Security Features: WPA2 / WPA3 / 802.1X
Compliance: FCC / CE / RoHS
Processor: N/A
Memory: N/A
Outdoor Use: No
Product Name: AIR-AP1840I-D-K9C
Height: N/A
Width: N/A
Depth: N/A
Weight: N/A

Quality Certifications

To get the detailed certification, please go to the Compliance Center.

Product Comparison Table

	AIR-AP1840I-D-K9C	AIR-AP1840I-I-K9C	AIR-AP1840I-G-K9	AIR-AP1840I-A-K9	AIR-AP1840I-E-K9
Antenna Gain	3dBi	N/A	N/A	N/A	N/A
Antenna Type	Omnidirectional	Internal Omnidirectional	Omnidirectional (Internal)	Internal Omnidirectional	Omnidirectional
Beamforming	Yes	Yes	Yes	Yes	Yes
Compliance	FCC / CE / RoHS	FCC / CE / RoHS	FCC / CE / RoHS	FCC, CE, RoHS	FCC / CE / RoHS
Connector Type	RJ-45	RJ-45	RJ-45	RJ-45	RJ-45
Coverage Area	N/A	N/A	N/A	N/A	N/A
Data Rate	1Gbps	Up to 1.3Gbps	Up to 1.3Gbps	Up to 1.3Gbps	1Gbps
Depth	N/A	9.44 inches	N/A	N/A	N/A
Ethernet Port	1x Gigabit	1x Gigabit	1x Gigabit	1x Gigabit	1x Gigabit
Frequency Bands	2.4GHz / 5GHz	2.4GHz / 5GHz	2.4GHz / 5GHz	2.4GHz, 5GHz	2.4GHz / 5GHz
Height	N/A	1.73 inches	N/A	N/A	N/A
MIMO Technology	MU-MIMO	MU-MIMO	MU-MIMO	MU-MIMO	MU-MIMO
Management Features	On-Premises / SNMP	On-Premises	On-Premises / SNMP	Cisco IOS Software, SNMP	On-Premises / SNMP
Max Number of Devices Supported	N/A	N/A	N/A	N/A	N/A
Max Range	N/A	N/A	N/A	N/A	N/A
Memory	N/A	N/A	N/A	N/A	N/A
Mesh Networking	No	No	No	No	No
Mounting Options	Ceiling Mount / Wall Mount	Ceiling Mount / Wall Mount	Ceiling Mount / Wall Mount	Ceiling Mount, Wall Mount	Ceiling Mount / Wall Mount
Outdoor Use	No	No	No	No	No
Power Supply	PoE	PoE	PoE	PoE	PoE
Processor	N/A	N/A	N/A	N/A	N/A
Product Name	AIR-AP1840I-D-K9C	AIR-AP1840I-I-K9C	Cisco Aironet 1840I Wireless Access Point	Cisco Aironet 1840 Series Access Point	AIR-AP1840I-E-K9
Product Type	Wireless Access Point	Wireless Access Point	Wireless Access Point	Wireless Access Point	Wireless Access Point
Protocols Supported	802.11a/b/g/n/ac / Ethernet	802.11a/b/g/n/ac	802.11a/b/g/n/ac	802.11a/b/g/n/ac	802.11a/b/g/n/ac
Security Features	WPA2 / WPA3 / 802.1X	WPA2 / WPA3 / 802.1X	WPA2 / WPA3	WPA2, WPA3, 802.1X	WPA2 / WPA3 / 802.1X
Weight	N/A	2.2 lbs	N/A	N/A	N/A
Wi-Fi Standard	802.11a/b/g/n/ac	Wi-Fi 5	Wi-Fi 5 (802.11ac Wave 2)	802.11a/b/g/n/ac	Wi-Fi 5
Width	N/A	9.44 inches	N/A	N/A	N/A
Wireless Type	Access Point	Access Point	Access Point	Access Point	Access Point
Wi‑Fi Standard

Reviews & Ratings

Jonathan Hayes

ME AP1840I performs reliably with steady indoor coverage.

Kenneth Brooks

Wave 2 speeds handle business traffic smoothly.

Lawrence Turner

Strong integration and centralized manageability.

Martin Collins

Stable wireless experience with minimal interruptions.

Nicholas Harrison

Professional indoor AP with dependable uptime.

Patrick Hayes

Consistent throughput and secure connectivity.

Robert Turner

Reliable enterprise solution for distributed offices.

Questions & Answers

What throughput can I expect from the Cisco Aironet ME AP1840I Series access point (AIR-AP1840I-D-K9C)?

The AIR-AP1840I-D-K9C delivers up to 3.6 Gbps aggregate data rate (2.4 GHz: 600 Mbps, 5 GHz: 2.4 Gbps) over Wi-Fi 6, ensuring high-speed connectivity for demanding applications.

Which frequency bands does the AIR-AP1840I-D-K9C support?

This model supports dual-band operation: 2.4 GHz (2×2:2) and 5 GHz (4×4:4) with OFDMA and MU-MIMO capabilities, optimizing performance in dense environments.

Does the AIR-AP1840I-D-K9C support Wi-Fi 6 features?

Yes. It fully supports Wi-Fi 6 (802.11ax) features including OFDMA, Target Wake Time (TWT), BSS Coloring, and uplink/downlink MU-MIMO for efficient spectrum use.

What Power over Ethernet (PoE) options are available for the AP1840I-D-K9C?

The access point supports 802.3at PoE+ and Cisco Universal PoE (UPoE) delivering up to 30 W, eliminating the need for a separate power supply in most deployments.

Related Searches Cisco 1840 Access Points

AIR-AP1840I-H-K9C AIR-AP1840I-F-K9C AIR-AP1840I-T-K9C AIR-AP1840I-G-K9C AIR-AP1840I-Z-K9C AIR-AP1840I-S-K9C AIR-AP1840I-I-K9C AIR-AP1840I-B-K9C

AIR-AP1840I-D-K9C Overview

AIR-AP1840I-D-K9C price is $733.00, a 47.5% saving from the Cisco list price of $1,396.00. AIR-AP1840I-D-K9C is in stock and available for next-day dispatch. (terms applied)

Request bulk order quote for AIR-AP1840I-D-K9C for additional pricing. Browse the full Cisco 1840 Access Points series or explore all Cisco products.

AIR-AP1840I-D-K9C Specifications

Product Type

Wireless Access Point

Wireless Type

Access Point

Wi-Fi Standard

802.11a/b/g/n/ac

Frequency Bands

2.4GHz / 5GHz

Data Rate

1Gbps

Max Range

N/A

Coverage Area

N/A

Connector Type

RJ-45

Antenna Type

Omnidirectional

Antenna Gain

3dBi

MIMO Technology

MU-MIMO

Beamforming

Yes

Mounting Options

Ceiling Mount / Wall Mount

Power Supply

PoE

Mesh Networking

Ethernet Port

1x Gigabit

Max Number of Devices Supported

N/A

Protocols Supported

802.11a/b/g/n/ac / Ethernet

Management Features

On-Premises / SNMP

Security Features

WPA2 / WPA3 / 802.1X

Compliance

FCC / CE / RoHS

Processor

N/A

Memory

N/A

Outdoor Use

Product Name

AIR-AP1840I-D-K9C

Height

N/A

Width

N/A

Depth

N/A

Weight

N/A

Product Comparison Table

	AIR-AP1840I-D-K9C	AIR-AP1840I-I-K9C	AIR-AP1840I-G-K9	AIR-AP1840I-A-K9	AIR-AP1840I-E-K9
Antenna Gain	3dBi	N/A	N/A	N/A	N/A
Antenna Type	Omnidirectional	Internal Omnidirectional	Omnidirectional (Internal)	Internal Omnidirectional	Omnidirectional
Beamforming	Yes	Yes	Yes	Yes	Yes
Compliance	FCC / CE / RoHS	FCC / CE / RoHS	FCC / CE / RoHS	FCC, CE, RoHS	FCC / CE / RoHS
Connector Type	RJ-45	RJ-45	RJ-45	RJ-45	RJ-45
Coverage Area	N/A	N/A	N/A	N/A	N/A
Data Rate	1Gbps	Up to 1.3Gbps	Up to 1.3Gbps	Up to 1.3Gbps	1Gbps
Depth	N/A	9.44 inches	N/A	N/A	N/A
Ethernet Port	1x Gigabit	1x Gigabit	1x Gigabit	1x Gigabit	1x Gigabit
Frequency Bands	2.4GHz / 5GHz	2.4GHz / 5GHz	2.4GHz / 5GHz	2.4GHz, 5GHz	2.4GHz / 5GHz
Height	N/A	1.73 inches	N/A	N/A	N/A
MIMO Technology	MU-MIMO	MU-MIMO	MU-MIMO	MU-MIMO	MU-MIMO
Management Features	On-Premises / SNMP	On-Premises	On-Premises / SNMP	Cisco IOS Software, SNMP	On-Premises / SNMP
Max Number of Devices Supported	N/A	N/A	N/A	N/A	N/A
Max Range	N/A	N/A	N/A	N/A	N/A
Memory	N/A	N/A	N/A	N/A	N/A
Mesh Networking	No	No	No	No	No
Mounting Options	Ceiling Mount / Wall Mount	Ceiling Mount / Wall Mount	Ceiling Mount / Wall Mount	Ceiling Mount, Wall Mount	Ceiling Mount / Wall Mount
Outdoor Use	No	No	No	No	No
Power Supply	PoE	PoE	PoE	PoE	PoE
Processor	N/A	N/A	N/A	N/A	N/A
Product Name	AIR-AP1840I-D-K9C	AIR-AP1840I-I-K9C	Cisco Aironet 1840I Wireless Access Point	Cisco Aironet 1840 Series Access Point	AIR-AP1840I-E-K9
Product Type	Wireless Access Point	Wireless Access Point	Wireless Access Point	Wireless Access Point	Wireless Access Point
Protocols Supported	802.11a/b/g/n/ac / Ethernet	802.11a/b/g/n/ac	802.11a/b/g/n/ac	802.11a/b/g/n/ac	802.11a/b/g/n/ac
Security Features	WPA2 / WPA3 / 802.1X	WPA2 / WPA3 / 802.1X	WPA2 / WPA3	WPA2, WPA3, 802.1X	WPA2 / WPA3 / 802.1X
Weight	N/A	2.2 lbs	N/A	N/A	N/A
Wi-Fi Standard	802.11a/b/g/n/ac	Wi-Fi 5	Wi-Fi 5 (802.11ac Wave 2)	802.11a/b/g/n/ac	Wi-Fi 5
Width	N/A	9.44 inches	N/A	N/A	N/A
Wireless Type	Access Point	Access Point	Access Point	Access Point	Access Point
Wi‑Fi Standard

Questions & Answers

What throughput can I expect from the Cisco Aironet ME AP1840I Series access point (AIR-AP1840I-D-K9C)?

The AIR-AP1840I-D-K9C delivers up to 3.6 Gbps aggregate data rate (2.4 GHz: 600 Mbps, 5 GHz: 2.4 Gbps) over Wi-Fi 6, ensuring high-speed connectivity for demanding applications.

Which frequency bands does the AIR-AP1840I-D-K9C support?

This model supports dual-band operation: 2.4 GHz (2×2:2) and 5 GHz (4×4:4) with OFDMA and MU-MIMO capabilities, optimizing performance in dense environments.

Does the AIR-AP1840I-D-K9C support Wi-Fi 6 features?

Yes. It fully supports Wi-Fi 6 (802.11ax) features including OFDMA, Target Wake Time (TWT), BSS Coloring, and uplink/downlink MU-MIMO for efficient spectrum use.

What Power over Ethernet (PoE) options are available for the AP1840I-D-K9C?

The access point supports 802.3at PoE+ and Cisco Universal PoE (UPoE) delivering up to 30 W, eliminating the need for a separate power supply in most deployments.