---
title: "Device Specifications"
slug: "device-specs"
description: "Hardware specs for Entertainment OS platform devices and legacy X1 set-top boxes running RDK Firmware."
updated: 2026-10-16T13:13:29Z
published: 2026-10-16T13:13:29Z
canonical: "docs.developer.comcast.com/device-specs"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.developer.comcast.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Device Specifications

Entertainment OS (EntOS) set-top boxes and televisions comprise a variety of devices. Detailed specifications are provided here below. All set-top boxes and TVs are powered by [RDK Firmware](https://rdkcentral.com/).

To learn what HTML language features are supported on each set-top box, [check out Caniuse](https://caniuse.com/). Using the filter to the right of the search bar, you can sort results by HTML5 and a selected status code. To learn about status code meanings, visit [Contributing to the Caniuse data](https://github.com/Fyrd/caniuse/blob/main/CONTRIBUTING.md).

**Device quick reference tables**

**EntOS**

| **Platform** | **Device Model** | **Performance Tier** | **4K Support** | **Wi-Fi Support** |
| --- | --- | --- | --- | --- |
| Stream Box | XiOne | High | Y | Y |
| Stream Box | ES1 | High | Y | Y |
| TV | Xumo TV | High | Y* | Y |
| TV | Sky Glass | High | Y | Y |

*4K is supported by the Xumo TV 4K 60Hz model only.

**Scaled**

| **Platform** | **Device Model** | **Performance Tier** | **4K Support** | **Wi-Fi Support** |
| --- | --- | --- | --- | --- |
| X1/Flex | Xi6 | High | Y | N |
| X1 | XG1v4 | High | Y | N |
| X1 | XiD | High | N | N |
| X1 | Xi5 | Medium | N | Y |

---

## Stream Box platform

### XiOne Stream Box

## ![](https://cdn.document360.io/2ef9e4de-7533-4223-bb1e-95306a730c06/Images/Documentation/Picture1.png)

![](https://cdn.document360.io/2ef9e4de-7533-4223-bb1e-95306a730c06/Images/Documentation/Picture2.png)

| **SoC** | Realtek RTD1319 or Broadcom BCM72174 |
| --- | --- |
| **Resolution** | 4K (3840 x 2160) |
| **DRAM** | 4GB |
| **Flash Memory** | 16GB eMMC |
| **HDR Support** | - Dolby Vision - HDR10 |
| **Inputs** | - RJ45 (10/100Mbps) - DVB (Optional) |
| **WIFI** | - WiFi 6 802.11 b/g/n/ac/ax - 2x2 SU-MIMO |
| **Bluetooth** | 5.0 |
| **HDMI 2.1 / HDCP 2.2** | Yes |
| **Audio** | - Dolby MS12 - DD - DD+ - Atmos Pass-through |
| **Time-Shift Buffer** | Local (Flash) |
| **Cast Support** | DIAL |
| **Voice Input** | PTT Remote |
| **Remote** | RF4CE / Bluetooth |
| **Launched** | 2021 |

### ES1 Stream Box

![](https://cdn.document360.io/2ef9e4de-7533-4223-bb1e-95306a730c06/Images/Documentation/image(251).png)

| **SoC** | Realtek RTD1315C or Broadcom 72126 |
| --- | --- |
| **Resolution** | 4K (3840 x 2160) |
| **DRAM** | 2GB |
| **Flash Memory** | 8GB eMMC |
| **HDR Support** | - Dolby Vision - HDR10 |
| **Inputs** | - RJ45 (10/100Mbps) - DVB (Optional) |
| **WIFI** | - WiFi 6 802.11 b/g/n/ac/ax - 2x2 SU-MIMO |
| **Bluetooth** | 5.x |
| **HDMI 2.1 / HDCP 2.2** | Yes |
| **Audio** | - Dolby MS12 - DD - DD+ - Atmos Pass-through |
| **Time-Shift Buffer** | Cloud |
| **Cast Support** | DIAL |
| **Voice Input** | PTT Remote |
| **Remote** | Bluetooth |
| **Launched** | 2024 / 2025 |

---

## TV platform

### Xumo TV

![](https://cdn.document360.io/2ef9e4de-7533-4223-bb1e-95306a730c06/Images/Documentation/Picture7.png)

**Xumo HD/FHD**

| **SoC** | Amlogic T950D4 |
| --- | --- |
| **Resolution** | 2K (1920 x 1080 / FHD, 1280 x 720 / HD) |
| **Refresh Rate** | 60Hz |
| **DRAM** | 1.5GB |
| **Flash Memory** | 8GB eMMC |
| **HDR Support** | No |
| **Low Latency Mode** | ALLM |
| **Inputs** | • HDMI (1.4) x 3 • Composite x 1 • RF (ATSC 1.0) x 1 • SPDIF Out x 1 • Headphone Out x 1 • USB (2.0) x 1 • RJ45 (10/100Mbps) x 1 (Optional) |
| **WIFI** | • WiFi 5 802.11 b/g/n/ac • 2x2 SU-MIMO • Offboard WIFI (Optional) |
| **Bluetooth** | 5.x |
| **HDMI 1.4 / HDCP 2.0** | Yes (All Inputs) |
| **ARC Support** | ARC |
| **Audio** | • Dolby MS12 • DD • DD+ |
| **Speaker** | 2CH |
| **Cast Support** | • Airplay2 • DIAL • Screen Mirroring • Miracast (Optional) |
| **Smart Home Support** | Homekit |
| **Voice Input** | PTT Remote |
| **Launched** | 2024 |

**Xumo 4K 60Hz**

| **SoC** | Amlogic T962D4 |
| --- | --- |
| **Resolution** | 4K (3840 x 2160) |
| **Refresh Rate** | 60Hz |
| **DRAM** | 2GB |
| **Flash Memory** | 8GB eMMC |
| **HDR Support** | • Dolby Vision (Optional) • HDR10 |
| **Low Latency Mode** | ALLM |
| **Inputs** | • HDMI (2.1) x 3 • Composite x 1 • RF (ATSC 1.0) x 1 • SPDIF Out x 1 • Headphone Out x 1 • USB (2.0) x 2 (Configurable) • RJ45 (10/100Mbps) x 1 (Optional) |
| **WIFI** | • WiFi 5 802.11 b/g/n/ac • WiFi 6 802.11 b/g/n/ac/ax • 2x2 SU-MIMO • Offboard WIFI (Optional) |
| **Bluetooth** | 5.x |
| **HDMI 2.1 / HDCP 2.2** | Yes (All Inputs) |
| **ARC Support** | eARC |
| **Audio** | • Dolby MS12 • DD • DD+ • Atmos Pass-through • Atmos 2CH (Optional) |
| **Speaker** | 2CH |
| **Cast Support** | • Airplay2 • DIAL • Screen Mirroring • Miracast (Optional) |
| **Smart Home Support** | • Homekit • Works with Alexa |
| **Voice Input** | PTT Remote |
| **Launched** | 2024 |

### Sky Glass TV

![](https://cdn.document360.io/2ef9e4de-7533-4223-bb1e-95306a730c06/Images/Documentation/Picture4.png)

**Sky Glass Air**

| **SoC** | Amlogic T962X3 |
| --- | --- |
| **Resolution** | 4K (3840 x 2160) |
| **Refresh Rate** | 60Hz |
| **Display** | Quantum Dot |
| **DRAM** | 2GB |
| **Flash Memory** | 32GB iNAND |
| **HDR Support** | Dolby Vision, HDR10 |
| **Low Latency Mode** | ALLM |
| **Inputs** | - HDMI x 3 - Optical Audio - DVB-T, DVB-S, DVB-C - USB (2.0) - USB-C + USB-A |
| **ARC support** | eARC |
| **WIFI** | WiFi 6 802.11 b/g/n/ac/ax, 2x2 SU-MIMO |
| **Bluetooth** | 5.x |
| **HDMI 2.1 / HDCP 2.2** | Yes (All Inputs) |
| **Time-Shift Buffer** | Local (Flash) |
| **Audio** | - Dolby MS12 - DD - DD+ - Atmos Pass-through - Atmos 2CH (Optional) |
| **Speakers** | 2CH |
| **Cast Support** | - Airplay2 - DIAL - Screen Mirroring - Miracast (Optional) |
| **Smart Home Support** | - Homekit - Works with Alexa |
| **Voice Input** | PTT Remote |
| **Remote** | Bluetooth |
| **Launched** | 2025 |

**Sky Glass Gen 2**

| **SoC** | Amlogic T962X3 |
| --- | --- |
| **Resolution** | 4K (3840 x 2160) |
| **Refresh Rate** | 60Hz |
| **Display** | Quantum Dot |
| **Dimming Zones** | 43": 60 / 55”: 112 / 65": 160 |
| **Brightness Control** | Ambient light sensor with IR filtering |
| **DRAM** | 4GB |
| **Flash Memory** | 32GB iNAND |
| **HDR Support** | Dolby Vision, HDR10 |
| **Low Latency Mode** | ALLM |
| **Inputs** | - HDMI x 3 - DVB-T - DVB-S - DVB-C - USB (2.0) - USB-C + USB-A |
| **ARC support** | eARC and CEC |
| **WIFI** | - WiFi 6 802.11 b/g/n/ac/ax - 2x2 SU-MIMO |
| **Bluetooth** | 5.2 |
| **HDMI 2.1 / HDCP 2.2** | Yes (All Inputs) |
| **Time-Shift Buffer** | Local (Flash) |
| **Audio** | - Dolby MS12 - DD - DD+ - Dolby Atmos |
| **Speakers** | 7 in a 3.1.2 architecture (250W) |
| **Cast Support** | - Airplay2 - DIAL |
| **Motion Sense** | Radar |
| **Voice Input** | PTT Remote / FFV |
| **Remote** | Bluetooth |
| **Launched** | 2025 |

**Sky Glass Gen 1**

| **SoC** | Amlogic T962X3 |
| --- | --- |
| **Resolution** | 4K (3840 x 2160) |
| **Refresh Rate** | 60Hz |
| **Display** | Quantum Dot |
| **Dimming Zones** | 43": 40 / 55”: 78 / 65": 112 |
| **Brightness Control** | Ambient light sensor with IR filtering |
| **DRAM** | 4GB |
| **Flash Memory** | 32GB iNAND |
| **HDR Support** | - Dolby Vision - HDR10 |
| **Low Latency Mode** | ALLM |
| **Inputs** | - HDMI x 3 DVB-T, DVB-S, DVB-C - USB (2.0) - USB-C |
| **ARC support** | eARC and CEC |
| **WIFI** | - WiFi 6 802.11 b/g/n/ac/ax - 2x2 SU-MIMO |
| **Bluetooth** | 5.0 |
| **HDMI 2.1 / HDCP 2.2** | Yes (All Inputs) |
| **Time-Shift Buffer** | Local (Flash) |
| **Audio** | - Dolby MS12 - DD - DD+ - Dolby Atmos |
| **Speakers** | 6 in a 3.1.2 architecture (215W) |
| **Cast Support** | - Airplay2 - DIAL |
| **Motion Sense** | PIR |
| **Voice Input** | PTT Remote / FFV |
| **Remote** | Bluetooth |
| **Launched** | 2021 |

---

## Scaled X1/Flex devices

![image.png](https://cdn.document360.io/2ef9e4de-7533-4223-bb1e-95306a730c06/Images/Documentation/image%2873%29.png)

The specifications below are for legacy/scaled X1 set-top boxes. You can expect consistent capabilities across all devices, but older devices may have slower performance and may not have access to advanced media playback features like 4K and Dolby Atmos.

| **Feature** | **Entry Level Devices** | **Mid-Range Devices** | **High-End Devices** |
| --- | --- | --- | --- |
| **Available Memory** | 190 MB | 190 MB | 190 MB |
| **Network Protocol** | IPv6 | IPv6 | IPv6 |
| **Browser** | Webkit (WPE) | Webkit (WPE) | Webkit (WPE) |
| **Video Decode** | mp4, mp2ts, x- motion-jpeg, rtsp+h264, mp4v | mp4, mp2ts, x- motion-jpeg, rtsp+h264, mp4v | mp4, mp2ts, x- motion-jpeg, rtsp+h264, mp4v |
| **h.264 (AVC)** | supported | supported | supported |
| **h.265 (HEVC)** | not supported | not supported | partial support |
| **VP8** | supported | supported | supported |
| **VP9** | not supported | not supported | not supported |
| **Streaming Protocol** | HLS, DASH | HLS, DASH | HLS, DASH |
| **Alpha Blending** | supported | supported | supported |
| **4K/UHD Support** | not supported | not supported | supported |
| **HDR Support** | not supported | HDR10 | HDR10, Dolby Vision 8.1 |
| **Audio Formats** | mpeg, eac3, mp3 | mpeg, eac3, mp3 | mpeg, eac3, mp3 |
| **Audio Decode** | AC3, E-AC3, MPEG1, MP3, AAC, LPCM | AC3, E-AC3, MPEG1, MP3, AAC, LPCM | AC3, E-AC3, MPEG1, MP3, AAC, LPCM |
| **Dolby Decoder** | MS11, MS12 - Config C | MS 12- Config C | MS11, MS12 - Config C |
| **Atmos Passthrough** | supported | supported | supported |
| **Atmos Mixing** | not supported | not supported | not supported |
| **Image Formats** | jpeg, png | jpeg, png | jpeg, png |
| **Max Image Size** | 2048x2048 | 4096x4096 | 4096x4096 |
| **Image Anti-aliasing** | supported | not supported | supported |

## Related

- [Remote Specifications](/remote-specifications.md)