Why some USB ports are purple (and why they're rarely sold in the US)

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Have you ever looked astatine a USB connector aliases larboard and wondered, "why is this purple alternatively of bluish aliases black?" It's not because nan shaper wanted to thief you shape your cables by hue. Rather it's astir velocity and charging capacity. Purple USB-C connectors are a peculiarly absorbing case, because nan colour tin mean much than 1 thing.

Before I explain, here's a speedy anecdote. I erstwhile tested an Honor Magic4 Pro smartphone that came pinch a 100 watt charger and USB cablegram pinch orangish connectors. That colour signified accelerated charging speeds, and it so boosted nan Magic4 Pro's large artillery rapidly. "That's fabulous," I thought. "Let maine complaint my MacBook Air pinch it." To my surprise, nan charger and cablegram didn't activity at all connected nan MacBook aliases different phones, because it turns retired that Honor's charger and cablegram person constricted usability extracurricular its ain ecosystem. 

The civilized of this communicative is that nan USB larboard colors supply a guideline for their functionality, but that doesn't mean cables, chargers and ports utilizing that colour will activity crossed each devices aliases travel a group standard. That's particularly pertinent to purple-coded USB cables, arsenic you'll see. 

The manufacture assemblage that regulates USB standards, nan USB Implementers Forum (USB-IF), uses 3 modular colors for USB: achromatic (USB 1.0), achromatic (USB 2.0) and bluish (USB 3.0, 3.1 aliases SuperSpeed). "Blue is nan recommended colour for nan USB 3.1 Standard-A receptacle... to thief users separate it from nan USB 2.0 Standard-A connector," nan institution says successful its legacy USB document. Any different colour including green, purple aliases orangish is not portion of USB-IF standards and has nary "official" meaning for ports aliases connectors.

With that said, purple does person a common, though acold from universal, connotation. It's utilized by Huawei's SuperCharge high-speed strategy for instrumentality charging, some connected Type-A and Type-C connectors and ports. Those support charging speeds astatine 40 watts aliases more, on pinch modular USB Power Deliver (PD) and Qualcomm's Quick Charge protocol. 

Huawei only uses that purple colour connected its 25W Mini Charger nowadays, promising compatibility pinch its ain phones arsenic good arsenic other Android and IOS devices. Its different SuperPower Wall Chargers (100W and 66W) person orangish USB-A and USB-C connectors, which besides denote high-current powerfulness transportation and accelerated information speeds. Huawei's 6A telephone charging cables each usage orangish connectors, truthful there's nary longer a purple-coded 1 to beryllium found. 

Huawei smartphones can't legally beryllium sold successful nan US owed to waste and acquisition sanctions pinch China, which explains why Americans seldom spot nan purple connectors. The objection is that immoderate non-Huawei USB 3.1 Gen 2 cablegram makers usage either teal bluish aliases purple connected nan connectors to denote nan other velocity complete USB 3.0 (10Gbps compared to 5Gbps) on pinch higher charging capacities. 

There are a fewer different colors utilized by USB manufacturers arsenic well, successful lawsuit you weren't confused capable by nan black, white, blue, teal, orangish and purple ones I've already mentioned. Red (desktop) aliases yellowish (laptop, ever on) ports bespeak either USB 3.2 aliases USB 3.1 Gen 2, but are besides utilized for charging-only ports. The different is green, which usually denotes Type-A aliases old-school Type-B Qualcomm Quick Charge receptacles and plugs. Razer besides famously uses greenish for the USB ports connected its laptops, to lucifer its branding aesthetic.

Unfortunately, consumers are often misled by these colour schemes, believing they're getting accelerated powerfulness transportation speeds and information rates. This has consequences for safety, power depletion and e-waste. Choosing nan incorrect charger aliases cablegram could nonstop a artillery to an early retirement, for example, aliases moreover origin a occurrence aliases explosion.

With each that, buying a USB cablegram based connected colour intelligibly isn't wise. Luckily, there's a amended way. Reputable manufacturers for illustration Anker and Apple person their cables and chargers USB-IF certified for circumstantial charging and information speeds. The latest PD 3.1 specification allows for safe powerfulness transportation good supra erstwhile specifications, pinch certifications for up to 140W, 180W and 240W powerfulness levels.  

For information speeds, you'll want to cheque nan USB information standard, pinch USB 3.1 (sometimes referred to arsenic USB 3.2 Gen 1) being nan slowest astatine 5Gbps and USB 4 being nan fastest astatine 40Gbps aliases moreover 80Gbs pinch Thunderbolt 5 compatibility. Some devices for illustration TVs, desktop PCs, and even nan MacBook Neo, person 1 aliases much ports that utilize nan older USB 2.0 spec, which maxes retired at 480Mbps. That's a bully fresh for peripherals for illustration mice and keyboards, but not overmuch else. If you request some precocious speeds and accelerated charging, you'll want to guarantee some USB-IF powerfulness transportation certification and nan latest USB standards. Some cables connection some fast speeds and precocious powerfulness delivery — and you tin moreover get them successful purple, but only connected nan outside.