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ME AP1840I performs reliably with steady indoor coverage.
AIR-AP1840I-D-K9C
Cisco Aironet ME AP1840I Series access point - D domain
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Name:
AIR-AP1840I-D-K9C
- Description:
- Cisco Aironet ME AP1840I Series access point - D domain
- Rating:
Added to cart 28 times recently
- Availability:
In stock - Ready to Ship
- Brand:
- Cisco
- GTIN:
- 889728160551
- Condition:
- Warranty:
- 3
- List Price:
$1,396.00
- Price:
$733.0047.5% off
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1
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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
K
Kenneth Brooks
5
Wave 2 speeds handle business traffic smoothly.
L
Lawrence Turner
5
Strong integration and centralized manageability.
M
Martin Collins
5
Stable wireless experience with minimal interruptions.
N
Nicholas Harrison
5
Professional indoor AP with dependable uptime.
P
Patrick Hayes
5
Consistent throughput and secure connectivity.
R
Robert Turner
4
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.
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.