Ubiquiti UK-ULTRA vs Ubiquiti UAP-AC-HD-5-US: Specification Comparison
Both the Ubiquiti UK-ULTRA and UAP-AC-HD-5-US are dual-band Wi-Fi 5 (802.11ac) wireless access points from Ubiquiti, making them legitimate cross-shop candidates for buyers evaluating indoor/outdoor APs. The UK-ULTRA is a compact pole-mount unit designed for harsh outdoor environments, while the UAP-AC-HD-5-US is an 802.11ac Wave 2 enterprise AP sold as a 5-pack targeting high-density indoor deployments. This comparison examines throughput and radio capability, physical environment and power requirements, and management and deployment fit.
In This Guide
- Which AP delivers higher throughput and what Wi-Fi 5 generation does each support?
- How do the two APs differ in environmental rating, physical form factor, and power requirements?
- What management platforms and deployment models do the two APs support?
- Which should you choose: the UK-ULTRA or the UAP-AC-HD-5-US?
- Side-by-Side Specs
- FAQ
Which AP delivers higher throughput and what Wi-Fi 5 generation does each support?
The UAP-AC-HD-5-US specifies an aggregate throughput of 2,533 Mbps across its dual-band radios, consistent with 802.11ac Wave 2 (MU-MIMO). The UK-ULTRA specifies 866.7 Mbps on 5 GHz and 300 Mbps on 2.4 GHz, for a combined ceiling of approximately 1,166.7 Mbps; it is identified as Wi-Fi 5 (802.11ac) without a Wave 2 designation. The UAP-AC-HD-5-US therefore offers roughly 2.2× the aggregate throughput of the UK-ULTRA. Channel bandwidth on the UK-ULTRA is documented as HT 20/40, VHT 20/40/80, and HE 20/40/80 MHz; equivalent channel bandwidth details for the UAP-AC-HD-5-US are not provided in the supplied specifications.
How do the two APs differ in environmental rating, physical form factor, and power requirements?
The UK-ULTRA carries an IPX6 ingress-protection rating, operates from −40 to 60 °C, uses UV-stabilized polycarbonate construction, and is rated for wind loading of 33.2 N at 200 km/h. It mounts on 1–2 inch poles and weighs 173 g. Power draw is 8 W maximum, sourced via PoE (44–57 V DC, 802.3af-compatible), making it operable from standard PoE switches. The UAP-AC-HD-5-US lists power consumption of 90 W per unit and requires PoE+; the 5-pack therefore demands up to 450 W aggregate from the PoE switch budget. Its dimensions are 10.20 × 11.30 × 10.30 inches and the 5-pack weighs 15.6 lbs; no IP rating or operating temperature range is provided in the supplied specifications. No outdoor or pole-mount capability is documented for the UAP-AC-HD-5-US.
What management platforms and deployment models do the two APs support?
The UAP-AC-HD-5-US is managed exclusively through the UniFi Network Controller, enabling centralized RF policy, roaming coordination, and fleet-level configuration across all five units in the pack. This suits IT environments already standardized on the UniFi ecosystem. The UK-ULTRA lists Ethernet as its management method; no UniFi controller dependency is specified in the supplied specifications, though Ubiquiti markets it under a separate product line (UK series). The UK-ULTRA supports 8 BSSIDs per radio and VLAN segmentation, which are documented. The UAP-AC-HD-5-US specifies centralized controller management and enterprise deployment type, but VLAN or SSID count details are absent from the supplied specifications. Buyers standardized on UniFi controller infrastructure should verify UK-ULTRA controller compatibility independently, as it is not confirmed in the provided data.
Which should you choose: the UK-ULTRA or the UAP-AC-HD-5-US?
Our take: The UK-ULTRA is the stronger choice when the deployment site is outdoors, exposed to weather, or constrained by available PoE power budgets. Its IPX6 rating and −40 to 60 °C operating range address environmental conditions for which no equivalent data exists for the UAP-AC-HD-5-US, its 8 W draw runs on any 802.3af switch, and its 173 g pole-mount form factor suits utility and surveillance infrastructure. The UAP-AC-HD-5-US is the stronger choice for high-density indoor enterprise environments: its 2,533 Mbps aggregate throughput is approximately 2.2× the UK-ULTRA's ~1,167 Mbps ceiling, and its Wave 2 MU-MIMO capability better serves dense concurrent client loads. The UAP-AC-HD-5-US's 90 W per-unit PoE+ requirement is a significant infrastructure consideration versus the UK-ULTRA's 8 W. Buyers already invested in the UniFi controller platform should also confirm UK-ULTRA controller compatibility before selecting it for mixed-site deployments.
Side-by-Side Comparison
Spec-for-spec, from manufacturer data.
| Specification | Ubiquiti UK-ULTRA | Ubiquiti UAP-AC-HD-5-US |
|---|---|---|
| Wi-Fi Standard | Wi-Fi 5 (802.11ac) | 802.11ac Wave 2 |
| Aggregate Throughput | ~1,166.7 Mbps (866.7 + 300) | 2,533 Mbps |
| 5 GHz Throughput | 866.7 Mbps | — |
| 2.4 GHz Throughput | 300 Mbps | — |
| MU-MIMO (Wave 2) | Not specified | Yes (Wave 2) |
| Channel Bandwidth | HT 20/40; VHT 20/40/80; HE 20/40/80 MHz | — |
| Power Method | PoE 802.3af (44–57 V DC) | PoE+ |
| Power Consumption | 8 W max | 90 W per unit |
| IP / Ingress Rating | IPX6 | — |
| Operating Temperature | −40 to 60 °C | — |
| Form Factor / Mount | Pole mount (1–2 in.), 137 × 84 × 34 mm | 10.20 × 11.30 × 10.30 in. (5-pack) |
| Weight | 173 g (6.1 oz) | 15.6 lbs (5-pack) |
| Management Platform | Ethernet (controller not specified) | UniFi Network Controller |
| VLAN / BSSID Support | Yes (8 BSSIDs per radio) | — |
| NDAA Compliant | Yes | — |
| Pack Quantity | 1 unit | 5-pack |
Frequently Asked Questions
Which should you choose: the UK-ULTRA or the UAP-AC-HD-5-US?
The UK-ULTRA is the stronger choice when the deployment site is outdoors, exposed to weather, or constrained by available PoE power budgets. Its IPX6 rating and −40 to 60 °C operating range address environmental conditions for which no equivalent data exists for the UAP-AC-HD-5-US, its 8 W draw runs on any 802.3af switch, and its 173 g pole-mount form factor suits utility and surveillance infrastructure. The UAP-AC-HD-5-US is the stronger choice for high-density indoor enterprise environments: its 2,533 Mbps aggregate throughput is approximately 2.2× the UK-ULTRA's ~1,167 Mbps ceiling, and its Wave 2 MU-MIMO capability better serves dense concurrent client loads. The UAP-AC-HD-5-US's 90 W per-unit PoE+ requirement is a significant infrastructure consideration versus the UK-ULTRA's 8 W. Buyers already invested in the UniFi controller platform should also confirm UK-ULTRA controller compatibility before selecting it for mixed-site deployments.
Can the UK-ULTRA be used indoors as well as outdoors?
The UK-ULTRA is specified as a compact indoor/outdoor AP with an IPX6 rating and an operating range of −40 to 60 °C, so it is suitable for both environments. Its 137 × 84 × 34 mm form factor and pole-mount bracket make it particularly well-suited to outdoor utility poles. The UAP-AC-HD-5-US lists indoor and outdoor operating modes in the supplied specs, but carries no documented IP rating, so its outdoor suitability cannot be confirmed from the provided data.
Will either AP work with my existing PoE switch, or do I need PoE+?
The UK-ULTRA draws 8 W maximum and is compatible with 802.3af PoE (44–57 V DC), so standard PoE switches are sufficient. The UAP-AC-HD-5-US requires PoE+ and is rated at 90 W per unit; a 5-pack demands up to 450 W aggregate, which requires a PoE+ switch with adequate total power budget. If your existing infrastructure is 802.3af only, the UK-ULTRA fits without upgrades, while the UAP-AC-HD-5-US does not.
Is the UAP-AC-HD-5-US or the UK-ULTRA better for a high-density conference center with many simultaneous users?
Based on the supplied specifications, the UAP-AC-HD-5-US is the more appropriate choice for high-density environments. Its 2,533 Mbps aggregate throughput and 802.11ac Wave 2 (MU-MIMO) capability are specifically designed for concurrent client loads in enterprise deployments such as conference centers, and its UniFi controller integration supports coordinated roaming across multiple units. The UK-ULTRA's maximum aggregate of approximately 1,167 Mbps and absence of a Wave 2 designation make it less suited to high-density indoor scenarios.
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