New Products · Sourcing brief

LILYGO T-Dongle-C5 brings dual-band WiFi 6 and 802.15.4 to a USB-A dongle form factor

LILYGO's T-Dongle-C5 upgrades the T-Dongle-S3 with ESP32-C5 RISC-V silicon, 16MB flash, 8MB PSRAM, microSD, optional OLED and a Qwiic connector.

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TL;DR — three sentences

  • LILYGO T-Dongle-C5 uses an Espressif Systems ESP32-C5 RISC-V SoC with dual-band 802.11ax WiFi 6, BLE 5.0 and 802.15.4 for Zigbee 3.0/Thread 1.3. (S1)
  • The board ships with 16MB flash, 8MB PSRAM, a microSD slot inside the USB-A connector, and an optional 0.96-inch color OLED. (S1)
  • A new Qwiic connector is added that was not present on the earlier T-Dongle-S3. (S1)

Taken from key_takeaways (real field, max 3 entries). Fact and analysis are labelled separately.

LILYGO T-Dongle-C5 brings dual-band WiFi 6 and 802.15.4 to a USB-A dongle form factor — New Products news briefEditorial cover for a New Products brief. Memory motif; headline "LILYGO T-Dongle-C5 brings dual-band WiFi 6 and 802.15.4 to a USB-A dongle form factor". Reported key numbers: 8 MB; 16 MB. 1 cited source. Static cover (no animation).NEW PRODUCTS · NEWS BRIEFLILYGO T-Dongle-C5 brings dual-band WiFi 6and 802.15.4 to a USB-A dongle form factorREPORTED KEY NUMBERS8 MB16 MB1 sourceXAIPART
Cover image generated from data already shown on this page: the category motif, the headline, and reported key numbers. No decorative illustration; no third-party image.

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Reported by CNX-Software on 2026-09-27. Summarized and analyzed by XAIPART Editorial.

What happened

LILYGO has introduced the T-Dongle-C5, a USB-A dongle built around the Espressif Systems ESP32-C5 wireless SoC, succeeding the earlier ESP32-S3-based T-Dongle-S3 board.S1

The board ships with 16MB flash and 8MB PSRAM, retains the microSD card slot and an optional 0.96-inch color OLED, and adds a Qwiic expansion connector not present on the prior T-Dongle.S1

On the wireless side, the ESP32-C5 adds dual-band 802.11ax WiFi 6 with 802.11b/g/n fallback, Bluetooth 5.0 LE, and an 802.15.4 radio supporting Zigbee 3.0 and Thread 1.3, addressing the WiFi 6 and 5 GHz gaps of the older S3 design.S1

The ESP32-C5 pairs a 32-bit RISC-V core at up to 240 MHz with a low-power 40 MHz RISC-V core, with 384 KB on-chip SRAM and 320 KB ROM. The microSD socket is integrated into the USB connector and uses a "virtual TF card" interface. Pricing, lead time and distributor stock were not disclosed by the source.S1

Key numbers
MetricReported valueSource
Wireless SoCEspressif Systems ESP32-C5[S1]
CPUSingle-core 32-bit RISC-V up to 240 MHz + 40 MHz LP core[S1]
On-chip SRAM / ROM384 KB / 320 KB[S1]
PSRAM8MB[S1]
Flash16MB[S1]
WiFiDual-band 802.11ax (2.4/5 GHz), 802.11b/g/n fallback[S1]
Bluetooth / 802.15.4BLE 5.0; Zigbee 3.0, Thread 1.3[S1]
DisplayOptional 0.96-inch color OLED[S1]
Storage expansionmicroSD slot in USB-A connector, "virtual TF card"[S1]
ExpansionQwiic connector[S1]
Unit priceNot disclosed[S1]
Distributor stock / lead timeNot disclosed[S1]

Background timeline

  1. - LILYGO T-Dongle-C5 announced as an ESP32-C5 successor to the earlier T-Dongle-S3 board. [S1]
  2. Earlier generation - Prior T-Dongle-S3 board used the ESP32-S3, without the Qwiic connector or dual-band WiFi 6 that the C5 adds. [S1]

XAIPART take

Technical impact

The ESP32-C5 brings 802.11ax on both 2.4 and 5 GHz bands alongside Bluetooth 5.0 LE and an 802.15.4 radio, so a single USB stick can cover WiFi 6 backhaul, BLE provisioning, and Zigbee/Thread mesh commissioning in one BOM line. XAIPART analysis

The RISC-V main plus 40 MHz low-power core split, 384 KB SRAM, 8MB PSRAM and 16MB flash are sufficient for an HTTPS/Thread border-router workload without an external MCU, and the Qwiic connector lets designers add I2C sensors without reworking the enclosure. XAIPART analysis

Market impact

LILYGO is positioning the T-Dongle-C5 as a drop-in upgrade path for T-Dongle-S3 users, which compresses the migration cost for shops that already stock the older part but need 5 GHz or 802.15.4. XAIPART analysis

Source did not disclose distributor stock, lead time or pricing, so procurement teams should not assume the same Chinese-channel 1-3 week lead time they have seen on T-Dongle-S3 orders; treat availability as open until a LILYGO store or AliExpress listing is verified. XAIPART analysis

Action

Pull the ESP32-C5 datasheet and confirm antenna RF performance over 5 GHz in the USB-A enclosure before swapping the part into any WiFi-6 BOM; the dongle's plastic shell and proximity to a host PC are real-world RF variables. XAIPART analysis

For Thread/Zigbee designs, validate Zigbee 3.0 and Thread 1.3 stack support in Espressif's ESP-IDF release notes, since a single-source report on protocol readiness is not yet equivalent to production certification. XAIPART analysis

XAIPART Forecast

XAIPART expects that, by 2027-03-31, at least one major Asian distributor (e.g. LCSC, Mouser APAC, or AliExpress LILYGO store) will list the T-Dongle-C5 at a published single-unit price between $9 and $15 USD; if no distributor carries it below $20 by that date this forecast is wrong. XAIPART analysis

Facts are as reported by the cited source. The design-in, sourcing and forward-looking statements above are XAIPART's analysis, not the source's claims. Uncertainty: pricing, distributor stock, lead time, and protocol-stack maturity claims rely on a single product post and were not disclosed in the source.

Corrections: none at publication. This brief will be updated with a timestamp if the source corrects its report.

Alternatives and lifecycle

Alternatives on file — catalog scope, not a market ranking
PartRelationLifecycleBasis
— No alternative on file NEEDS DATA — Requires match_type before any predecessor label may appear

“Predecessor” and “alternative” labels come only from a recorded match type, a lifecycle status, or the source text. Where no match is recorded, no label is shown. Our own listings are not a market reference.

What to watch

Falsifiable forecast — threshold, window and current status. Disproved forecasts stay visible.
ClaimThresholdByStatus
XAIPART expects that, by 2027-03-31, at least one major Asian distributor (e.g. LCSC, Mouser APAC, or AliExpress LILYGO store) will list the T-Dongle-C5 at a published single-unit price between $9 and $15 USD no distributor carries it below $20 by that date Pending

Forecasts that turn out wrong are kept visible and marked. We do not delete them.

Affected parts

No catalog match. This story does not map to any part currently listed on XAIPART. We do not infer matches, and we do not show a placeholder list.

Where this sits in the story

Event chain · as of 2026-10-11T14:39:04+08:00 · nodes link to published articles on this site.
Event chain — espressif-systems+new-productsChain nodes: 2026-10-11 M5Stack launches the rugged ToughC5 with ESP32-C5, dual-band Wi-Fi 6, BLE 5, and Zigbee/Thread, targeting outdoor edge nodes and industrial field control.; 2026-10-11 LILYGO's T-Dongle-C5 upgrades the T-Dongle-S3 with ESP32-C5 RISC-V silicon, 16MB flash, 8MB PSRAM, microSD, optional OLED and a Qwiic connector.. As of 2026-10-11T14:39:04+08:00. Open forecast: M5Stack launches the rugged ToughC5 with ESP32-C5, dual-band Wi-Fi 6, BL — pending Open forecast: LILYGO's T-Dongle-C5 upgrades the T-Dongle-S3 with ESP32-C5 RISC-V silic — pending.2026-10-11M5Stack launches tour brief ↗2026-10-11LILYGO's T-Dongle-our brief ↗this briefOpen forecast: M5Stack launches the rugged ToughC5 with ESP32-C5, dual-band Wi-Fi 6, BL — pendingOpen forecast: LILYGO's T-Dongle-C5 upgrades the T-Dongle-S3 with ESP32-C5 RISC-V silic — pending
  1. what-the-m5stack-toughc5-esp32-c5-controller-means-for-outdoor-iot-boms-and-matter-designs2026-10-11 · product launch
  2. lilygo-t-dongle-c5-brings-dual-band-wifi-6-and-802-15-4-to-a-usb-a-dongle-form-factor2026-10-11 · shortage
  1. M5Stack launches the rugged ToughC5 with ESP32-C5, dual-band Wi-Fi 6, BLE 5, and Zigbee/Thread, targeting outdoor edge nodes and industrial field control. product launch
  2. LILYGO's T-Dongle-C5 upgrades the T-Dongle-S3 with ESP32-C5 RISC-V silicon, 16MB flash, 8MB PSRAM, microSD, optional OLED and a Qwiic connector. shortage

The chain is built only from published briefs — a node without a brief is not drawn.

Cost pressure by dimension

Source: FRED · Generated · reference output z and composite are algorithm outputs, not a fetch snapshot

Cost pressure by dimension — composite stateDiverging bars for three dimensions around a zero midpoint. Input Cost has no reading; Supply Demand z -1.4711, notable; Fx Energy z 0.4541, neutral. Composite index -7.6, band neutral.0Input costno readingSupply/demandz −1.4711 · notable46 dFX & energyz +0.4541 · neutral6 dcomposite −7.6 · neutral−100 · −40 · −15 · 0 · +15 · +40 · +100
Underlying values — copyable for verification.
DimensionFRED series IDUnitLagAs of
Input costPCOPPUSDM, PALUMUSDM, PNICKUSDMUSD/mt96 d
Supply/demandPCU334413334413, IPG3344Sindex(1982=100) / index(2017=100)46 d
FX & energyDEXCHUS, DCOILBRENTEU, DHHNGSPrate / USD/bbl / USD/MMBtu6 d

No free authoritative interface for: gold · silver · rare earth · polysilicon · lithium carbonate · market share — listed rather than approximated.

How this was produced

Process evidence — fetch, source sanity, model and gate
Audit trail for this brief
Source fetched CNX-Software · www.cnx-software.com · 1,979 chars · fetch status success
Source sanity (S1) ok — passed before any model call (no s1_ block recorded)
Model / prompt MiniMax-M3 · prompt Blog Agent - News Summary (v2.8-final) · 6,785 tokens · 23.8s · run completed
Gate verdict pass · 6/6 applicable checks passed · spec v2.9 · C10 ratio 0.037988 · C10 rounds 0
Time contract 1 <time datetime> values in this brief — 0 violations (+08:00 or date-only)

Every row above is produced by the pipeline, not written by hand.

Editorial score

Deterministic gate result — pure PHP, no model involvement in the verdict
Gate score breakdown 6 applicable checks, 6 passed: 100 percent. No hold items or mandatory failures. Gate spec: v2.9 (S0 + S1 + C1–C20) · Source affinity (C20): 0.5571. Applicable checks passed 6 / 6 = 100% · verdict: pass No hold items or mandatory failures Gate spec: v2.9 (S0 + S1 + C1–C20) · Source affinity (C20): 0.5571 The gate decides publication. The independent audit score is advisory only.

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Sources

  1. LILYGO T-Dongle-C5 – An ESP32-C5 USB dongle with microSD card slot, optional 0.96-inch OLED — https://www.cnx-software.com/2026/09/27/lilygo-t-dongle-c5-an-esp32-c5-usb-dongle-with-microsd-card-slot-optional-0-96-inch-oled/ · rss · accessed

Facts are marked S1/S2 and trace to the linked source. Passages labelled analysis are XAIPART's own reasoning, kept separate from reported facts. Source links are followed rather than nofollow — attribution is intentional.