The useful distinction
Recognize it. Then verify it.
Mini-TOSLINK uses a 3.5 mm optical form that can be confused with analog audio connectors. [C025A]
Apple distinguishes a metal 3.5 mm analog plug from a 3.5 mm optical plug, and describes a TOSLINK miniplug adapter or optical lead for optical digital input on some Mac computers. [C025B]
Google explicitly lists the Chromecast Audio 3.5 mm jack as providing analog and optical digital audio output. [C025C]
Apple lists digital/analog line-out support at the headphone jack of the MacBook Pro (Retina, 13-inch, Early 2015). The wording is preserved without adding a connector pin map or extending it to other models. [C025D]
Hosa describes GOP-490 as adapting a male TOSLINK optical cable to a 3.5 mm combo jack, with TOSLINK and Mini-TOSLINK connector labels. [C025E]
CLIFF distinguishes the FM65010 3.5 mm optical-jack adaptor from the separately listed FM65215 mixed-ended optical cable. [C025F]
The CLIFF FM65215, FM65220 and FM65225 table specifies different cable lengths beside a shared optical-cable photograph. [C025G]
Identify the documented form
Confirm optical support before treating a small round socket as Mini-TOSLINK.
- Mini-TOSLINK is an optical form, despite the familiar small audio-plug size. S845
- Chromecast Audio explicitly documents analog and optical output on its named jack; that is exact-device evidence, not support on every headphone socket. S408
- CLIFF lists an optical adaptor separately from its mixed-ended optical cable; distinguish the accessory object being identified. S533
Rows, pitch, dimensions, keying and view limits
Keep this limit: Apple’s description of optical input on some Macs does not establish the direction or support of another model. S406 · S407
Make the next check
Find an explicit optical input/output statement for the exact device, then choose the documented optical ends.
Existing source inspection and AI review remain distinct from independent technical review. A matching form does not establish a safe connection.
Recorded variant and source limits
- No connector mating tolerances, insertion depth or fabrication dimensions have been verified.
- A module PCB pin map or a combination socket’s analog terminals must not be imported as optical cable contacts.
- Check exact output/input roles, receiver mode and audio decoding; a matching connector does not prove them.
- No physical sample or hardware connection has been tested.
- Retained dimensions context (excluded from normalized contact/body field): 1500 mm / complete named cable assembly length. Exact named example FM65215: TOSLINK-to-3.5mm optical cable assembly. Exact example only; no universal geometry, electrical compatibility, fabrication approval or wiring instruction. Do not derive electricalTRS/TRRS contacts from the round optical end, or infer photograph cable length. Sources: S533: Issue5 p.2 item row and specifications; also p.1 FM65010 adaptor illustration
Report a correction to this identification or view →Bounded facts, visible unknowns
Specifications and limits
A boundary, not an omission to guess around.This record is an identification starting point. It does not provide measured mating tolerances, a wiring pinout, electrical approval, or a list of verified device models. Use the original device and accessory documentation to resolve the remaining requirements.
Optical reference depth
A 3.5 mm opening alone does not establish optical support. The new combination-socket guide keeps exact Google and Apple statements separate from generic headphone jacks.
The source trail
Evidence for this page
AI-assisted inspection is not independent engineering review. Source scope and access limitations are disclosed below. Procedural checklists are editorial requirements, not hardware measurements.
Back to first citation ↑C025ASource checked · pending review
Mini-TOSLINK uses a 3.5 mm optical form that can be confused with analog audio connectors.
CLIFF Electronic Components · TOSLINK Optical Audio Data Cables ↗Locator: Opening optical/light transmission description; TOSLINK to Mini-TOSLINK3.5mm lead sets; Mini-TOSLINK optical jack plug; FM65215/FM65220/FM65225 and FM65010 adapter listings.
Access: public page. Product-family optical identification only. The3.5mm similarity warning is editorial caution, not measured user confusion. No dimensional tolerances or source photos were imported.
S845: full source recordInspect review dependencies → (private workspace)Claim scope: Consumer identification / documented standard or product class only. Next review due 2027-01-19.
Back to first citation ↑C025BSource checked · pending review
Apple distinguishes a metal 3.5 mm analog plug from a 3.5 mm optical plug, and describes a TOSLINK miniplug adapter or optical lead for optical digital input on some Mac computers.
Apple · Use the ports on your Mac ↗Locator: Learn about the ports on your Mac: Analog audio out and Audio in table rows.
Access: public page. General guide, not an exact-model optical port inventory. Optical input on some Macs must not be treated as output support or as support on every headphone socket.
S406: full source recordInspect review dependencies → (private workspace)Claim scope: General Mac guide terminology and some-model optical input only; not proof of output support, a socket pinout or every Mac model’s capabilities.. Next review due 2027-01-05.
Back to first citation ↑C025CSource checked · pending review
Google explicitly lists the Chromecast Audio 3.5 mm jack as providing analog and optical digital audio output.
Google · Chromecast audio specifications ↗Locator: Ports and connectors: 3.5 mm jack with analog and optical digital audio output.
Access: public page. No universal miniplug support, optical input, simultaneous-use guarantee, full codec list or connector mechanical drawing is established by this specification.
S408: full source recordInspect review dependencies → (private workspace)Claim scope: Exact Chromecast Audio specification only; no optical input, simultaneous-mode behavior or support on unrelated 3.5 mm sockets is inferred.. Next review due 2027-01-05.
Back to first citation ↑C025DSource checked · pending review
Apple lists digital/analog line-out support at the headphone jack of the MacBook Pro (Retina, 13-inch, Early 2015). The wording is preserved without adding a connector pin map or extending it to other models.
Apple · MacBook Pro (Retina, 13-inch, Early 2015) — Technical Specifications ↗Locator: Audio section: 3.5 mm headphone jack and digital/analog line-out support.
Access: public page. The page says digital/analog; it does not itself specify an optical connector geometry, electrical pin map, sample-rate limit or capabilities of later MacBook models.
S407: full source recordInspect review dependencies → (private workspace)Claim scope: Exact Apple model and source wording only; the specification does not itself establish optical geometry, input capability or later model support.. Next review due 2027-01-05.
Back to first citation ↑C025ESource checked · pending review
Hosa describes GOP-490 as adapting a male TOSLINK optical cable to a 3.5 mm combo jack, with TOSLINK and Mini-TOSLINK connector labels.
Hosa Technology · GOP-490 Fiber Optic Adapter — Toslink to Mini-Toslink ↗Locator: Product description and connector labels: male TOSLINK optical cable to 3.5 mm combo jack; GOP-490 identity.
Access: public page. Marketing examples such as iMac do not select a model. No pinout, insertion dimensions, direction guarantee, codec decoder, loss budget or universal headphone-jack compatibility is provided.
S410: full source recordInspect review dependencies → (private workspace)Claim scope: Named optical adapter as a connector-form example only; not evidence that a generic analog headphone jack acquires optical support.. Next review due 2027-01-05.
Back to first citation ↑C025FSource checked · pending review
CLIFF distinguishes the FM65010 3.5 mm optical-jack adaptor from the separately listed FM65215 mixed-ended optical cable.
CLIFF · TOSLINK optical cables and 3.5 mm optical adaptor — issue 5 ↗Locator: Issue 5, copyright 09/2023; PDF pp.1–2: FM65010 adaptor and FM65215/20/25 mixed-ended optical cables. Only p.2 photograph visually inspected.
Access: public pdf text. Only those dated item rows and the shared FM652xx photograph. The photograph does not identify a cable length. Caps obscure the optical ends. Ambiguous numerical aperture and material units are not imported.
S533: full source recordInspect review dependencies → (private workspace)Claim scope: Those item identities, not universal compatibility with every 3.5 mm socket. The exact FM65010 image was not visually inspected.. Next review due 2027-01-09.
Back to first citation ↑C025GSource checked · pending review
The CLIFF FM65215, FM65220 and FM65225 table specifies different cable lengths beside a shared optical-cable photograph.
CLIFF · TOSLINK optical cables and 3.5 mm optical adaptor — issue 5 ↗Locator: Issue 5, copyright 09/2023; PDF pp.1–2: FM65010 adaptor and FM65215/20/25 mixed-ended optical cables. Only p.2 photograph visually inspected.
Access: public pdf text. Only those dated item rows and the shared FM652xx photograph. The photograph does not identify a cable length. Caps obscure the optical ends. Ambiguous numerical aperture and material units are not imported.
S533: full source recordInspect review dependencies → (private workspace)Claim scope: The photograph supports a named-series view, not identification of one exact cable-length code. The depicted tip remains capped in the original study.. Next review due 2027-01-09.
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