Mildly spicy take: USB is an unrecoverable disaster and we need an entirely unrelated team to invent something entirely new to replace it because we're never getting this sleeping bag back in the little bag it shipped in.

USB 1.1 was cool in 1996; it replaced PS/2, RS-232, Centronics parallel, several proprietary connectors, several use cases for SCSI, ADB, Apple's DIN serial ports, and probably some stuff I'm missing. There was an A plug and a B plug, main problem was both weren't very obvious which way up you were supposed to plug them. Speed was low but firewire existed for high speed connections.

USB 2.0 was cooler in 2000. The plugs and sockets were identical, the cable was similar but with better shielding, it was as fast or faster than FireWire 400. They did start introducing more plugs, like Mini-B and Micro-B, mainly for portable devices. There were also Mini-A and Micro-A, I've never personally seen them. That pretty much finished off external SCSI. Higher speed FireWire was still there if you needed faster than USB but USB 2.0 did basically everything. To indicate USB 2.0 devices and ports, they made the tongues black in contrast with USB 1.1's white tongues. Didn't really matter in practice; by the time people had devices that needed the speed, USB 2.0 ports were all machines had.

USB 3.0 took too long to arrive in 2008. The additional speed was sorely needed by then, FireWire was mostly an Apple thing, PCs had but often didn't use it, so PCs mostly didn't have anything faster than 480Mbit/s until Obama was sworn in. USB 3.0 is best thought of as a separate tech bolted on top of USB 2.0, they added 5 more wires, a ground wire and two pair of high speed data lines for 5Gbit/s full duplex. The original four wires are also in the cable for power and 480Mbit/s half-duplex. They managed to make the A plug and socket entirely forwards and backwards compatible, the 3B sockets are compatible with 2B plugs (same with micro) but 3B plugs are not compatible with 2B sockets (again, same with micro). Which means we've just added two more kinds of cable for people to keep track of! So a typical consumer now likely has a printer with a USB A-B cable, some bluetooth headset or mp3 player they're still using that has a mini-B plug, an Android smart phone with a micro-B plug, an iPod Touch with a Lightning plug because Apple are special widdle boys and girls with special widdle needs, and now an external hard drive with a 3A to micro-3B plug, which just looking at it is obviously a hack job.

Computer manufacturers didn't help. It's still common for PCs to have 2.0 ports on them for low speed peripherals like mice, keyboards, printers, other sundry HIDs, to leave 3.0 ports open for high speed devices. To differentiate these to users, 3.0 ports are supposed to be blue. In my experience, about half of them are black. I own a Dell laptop made in 2014 with 1 2.0 and 2 3.0 ports, all are black. I own two Fractal Design cases, all of their front USB ports are black. Only ports on my Asrock motherboards are blue. I've had that laptop for nearly 12 years now, I STILL have to examine the pinout to tell which one is the USB 2.0 port. My Fractal cases aren't that bad because they have no front 2.0, but I built a PC for my uncle that does have front 2.0 and 3.0 ports, and they're all black.

USB 3.1 showed up in 2013, alongside the USB-C connector, and the train came entirely off the rails. USB 3.1 offers even higher 10Gbit/s duplex throughput, maybe on the same cable as 3.0. If the port supports it. How do you tell a 3.1 port from a 3.0 port? They'll silk screen on a logo in -8 point font that'll scratch off in a month, it is otherwise physically identical. Some motherboard manufacturers break with the standard in a good way and color 3.1 capable ports a slightly teal-ish blue. USB A-B cables can carry a USB 3.1 10Gbit/s signal. But, they also introduced the USB-C connector, which is its own thing.

USB-C was supposed to be the answer to our prayers. It's almost as small as a Micro-2B connector, it's reversible like a Lightning port, it can carry a LOT of power for fast charging and even charging laptops, and it's got not one, but two sets of tx/rx pins, so it can carry high speed USB data in full duplex AND a 4k60hz DisplayPort signal AND good old fashioned 480Mbit/s USB2.0 half-duplex for peripherals. In one wire. That was the dream, anyway.

Android smart phones moved over to USB-C, a lot of laptops went mostly or entirely USB-C, PCs added one or two...and that's where we are to this day. Keyboards, mice, wireless dongles, HIDs, still all use USB-A plugs, there doesn't seem to have been any move at all to migrate. Laptops are now permanently in dongle hell as bespoke ports like HDMI are disappearing, yet monitors and especially televisions are slow to adopt DP over USB-C.

Also, about half of the USB-C cables on the market are 4-wire USB 2.0 cables. There are no USB-C data cables, just D+ and D- plus power. They're phone charging cables; they're sufficient for plugging a phone into a wall wart or car charger but they often don't carry laptop amounts of power and they don't carry high speed data or video.

USB 3.2 turned up in 2017, added the ability to do two simultaneous 3.1 10Gbit/s connections in the same cable, a boon for external SSDs, retroactively renamed 3.0 and 3.1 to 3.2 Gen 1 and 3.2 Gen 2, with 3.2 being 3.2 Gen 2x2, changed to different case logos to match, pissed in the fireplace and started jabbering about Thunderbolt. Thunderbolt was an Intel thing to put PCIe lanes out mini DisplayPort cables, usually for the purposes of connecting external GPUs to laptops but also for general purpose high speed data transfer. Well, around this time they decided to transition to USB-C connectors for Thunderbolt.

Problem: They use a lighting bolt logo to denote a Thunderbolt port. Lightning bolt, or angled squiggle lines, have been used to mean "high speed", "Power delivery", "Apple Lightning", and now "Thunderbolt."

"Power delivery" sometimes but not always denoted by a yellow or orange tongue means that port delivers power even with the device turned off...or something. And has nothing to do with the fact that USB-C cables now have chips in them to negotiate with power bricks and devices for how much power can be delivered, and nobody marks the cables as such, so you just have to know what your cables can do. They're nearly impossible to shop for, and if you want to set up a personal system of "my low-speed cables are black, my high speed cables are white, my high power cables are red" fuck you, your Samsung will come with a white 2.0 cable and nobody makes a high power red cable.

USB4 is coming out now, it's eaten Thunderbolt to gain its power, it'll be able to do even higher speed links if you get yet another physically indistinguishable cable, and if you hold it upside down it'll pressure wash your car, but only Gigabyte Aorus motherboards support that feature as of yet.

The "fistful of different cables to keep track of" is only getting worse as we head into the USB4 era and it needs to be kicked in the head and replaced entirely.

Display port over USB-C is totally a thing. With things like USB-PD USB seem to be getting dangerously close to becoming the standard for everything. The cables are a wreck though and are way too hard for a layperson to tell apart.

I mentioned this in another thread but “DP Alt” (DP over USB-C) is not a default feature of the USB spec and is an optional extension that needs to be added via additional hardware and supported by the device. At that point you’re basically adding in DP with just a different port.

To that end, it’s still the same thing that TV manufacturers just aren’t adding in DP support regardless of connector.

My monitor (tv) supports usb c and I like it! The flexibility was nice during my single battle station move